ilDAVServer Class Reference

Inheritance diagram for ilDAVServer:

Collaboration diagram for ilDAVServer:

Public Member Functions
	ilDAVServer ()
	Constructor. More...
	serveRequest ()
	Serves a WebDAV request. More...
	PROPFIND (&$options, &$files)
	PROPFIND method handler. More...
	GET (&$options)
	GET method handler. More...
	PUT (&$options)
	PUT method handler. More...
	PUTfinished (&$options)
	PUTfinished handler. More...
	MKCOL ($options)
	MKCOL method handler. More...
	DELETE ($options)
	DELETE method handler. More...
	MOVE ($options)
	MOVE method handler. More...
	COPY ($options, $del=false)
	COPY method handler. More...
	PROPPATCH (&$options)
	PROPPATCH method handler. More...
	LOCK (&$options)
	LOCK method handler. More...
	UNLOCK (&$options)
	UNLOCK method handler. More...
	toNodePath ($davPath)
	Converts a DAV path into a node path. More...
	getMountURI ($refId, $nodeId=0, $ressourceName=null, $parentRefId=null, $genericURI=false)
	Returns an URI for mounting the repository object as a webfolder. More...
	getFolderURI ($refId, $nodeId=0, $ressourceName=null, $parentRefId=null)
	Returns an URI for mounting the repository object as a webfolder using Internet Explorer and Firefox with the "openwebfolder" plugin. More...
	getObjectURI ($refId, $ressourceName=null, $parentRefId=null)
	Returns an URI for getting a object using WebDAV by its name. More...
	getFileURI ($refId, $ressourceName=null, $parentRefId=null)
	Returns an URI for getting a file object using WebDAV. More...
	isWebDAVoverHTTPS ()
	Returns true, if the WebDAV server transfers data over HTTPS. More...
Public Member Functions inherited from HTTP_WebDAV_Server
	HTTP_WebDAV_Server ()
	Constructor. More...
	serveRequest ()
	Serve WebDAV HTTP request. More...
	http_OPTIONS ()
	GET implementation. More...
	http_PROPFIND ()
	PROPFIND method handler. More...
	http_PROPPATCH ()
	PROPPATCH method handler. More...
	http_MKCOL ()
	MKCOL method handler. More...
	http_GET ()
	GET method handler. More...
	_get_ranges (&$options)
	parse HTTP Range: header More...
	_multipart_byterange_header ($mimetype=false, $from=false, $to=false, $total=false)
	generate separator headers for multipart response More...
	http_HEAD ()
	HEAD method handler. More...
	http_PUT ()
	PUT method handler. More...
	http_DELETE ()
	DELETE method handler. More...
	http_COPY ()
	COPY method handler. More...
	http_MOVE ()
	MOVE method handler. More...
	http_LOCK ()
	LOCK method handler. More...
	http_UNLOCK ()
	UNLOCK method handler. More...
	_copymove ($what)
	_allow ()
	check for implemented HTTP methods More...
	mkprop ()
	helper for property element creation More...
	_check_auth ()
	check authentication if check is implemented More...
	_new_uuid ()
	generate Unique Universal IDentifier for lock token More...
	_new_locktoken ()
	create a new opaque lock token as defined in RFC2518 More...
	_if_header_lexer ($string, &$pos)
	_if_header_parser ($str)
	parse If: header More...
	_check_if_header_conditions ()
	check if conditions from "If:" headers are meat More...
	_check_uri_condition ($uri, $condition)
	Check a single URI condition parsed from an if-header. More...
	_check_lock_status ($path, $exclusive_only=false)
	lockdiscovery ($path)
	Generate lockdiscovery reply from checklock() result. More...
	http_status ($status)
	set HTTP return status and mirror it in a private header More...
	_urlencode ($url)
	private minimalistic version of PHP urlencode() More...
	_urldecode ($path)
	private version of PHP urldecode More...
	_prop_encode ($text)
	UTF-8 encode property values if not already done so. More...
	_slashify ($path)
	Slashify - make sure path ends in a slash. More...

Static Public Member Functions
static	getInstance ()
	Get singelton iunstance. More...
static	_isActive ()
	Static getter. More...
static	_isActionsVisible ()
	Static getter. More...
static	_getDefaultWebfolderInstructions ()
	Gets instructions for the usage of webfolders. More...
static	_getWebfolderInstructionsFor ($webfolderTitle, $webfolderURI, $webfolderURI_IE, $webfolderURI_Konqueror, $webfolderURI_Nautilus, $os='unknown', $osFlavor='unknown')
	Gets Webfolder mount instructions for the specified webfolder. More...

Protected Member Functions
	checkLock ($path)
	checkLock() helper More...
	getLogin ($userId)
	Returns the login for the specified user id, or null if the user does not exist. More...
	writelog ($message)
	Writes a message to the logfile.,. More...

Private Member Functions
	davUrlEncode ($path)
	We do not implement this method, because authentication is done by ilias3/webdav.php. More...
	isFileHidden (&$objDAV)
	Returns true, if the resource has a file name which is hidden from the user. More...
	fileinfo ($resourcePath, $displayPath, &$objDAV)
	Creates file info properties for a single file/resource. More...
	mountDir (&$objDAV, &$options)
	Mount method handler for directories. More...
	showMountInstructions (&$objDAV, &$options)
	Mount instructions method handler for directories. More...
	getDir (&$objDAV, &$options)
	GET method handler for directories. More...
	getObject ($davPath)
	Gets a DAV object for the specified path. More...
	toObjectPath ($davPath)
	Converts a DAV path into an array of DAV objects. More...
	davDeslashify ($path)
	davDeslashify - make sure path does not end in a slash More...
	davBasename ($path)
	Private implementation of PHP basename() function. More...
	getUploadMaxFilesize ()
	Gets the maximum permitted upload filesize from php.ini in bytes. More...

Private Attributes
	$cachedObjectDAV
	Cached object handler. More...
	$locks
	Handler for locks. More...
	$properties
	Handler for properties. More...
	$clientOS = 'unknown'
	The operating system of the WebDAV client. More...
	$clientOSFlavor = 'unknown'
	The flavor of the operating system of the WebDAV client. More...
	$clientBrowser = 'unknown'
	The name of some well known browsers, that need special support. More...
	$putObjDAV = null
	$isHTTPS = null
	$isDebug = false
	The WebDAVServer prints lots of log messages to the ilias log, if this variable is set to true. More...

Static Private Attributes
static	$instance = null

Additional Inherited Members
Data Fields inherited from HTTP_WebDAV_Server
	$uri
	$base_uri
	$path
	$http_auth_realm = "PHP WebDAV"
	$dav_powered_by = ""
	$_if_header_uris = array()
	$_http_status = "200 OK"
	$_prop_encoding = "utf-8"

Detailed Description

Definition at line 51 of file class.ilDAVServer.php.

Member Function Documentation

_getDefaultWebfolderInstructions()

static ilDAVServer::_getDefaultWebfolderInstructions ( )

static

Gets instructions for the usage of webfolders.

The instructions consist of HTML text with placeholders. See _getWebfolderInstructionsFor for a description of the supported placeholders.

Returns

String HTML text with placeholders.

Definition at line 2019 of file class.ilDAVServer.php.

References $lng.

Referenced by _getWebfolderInstructionsFor(), ilObjFileAccessSettings\getCustomWebfolderInstructions(), and ilObjFileAccessSettings\getDefaultWebfolderInstructions().

        {
                global $lng;
                return $lng->txt('webfolder_instructions_text');
        }

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_getWebfolderInstructionsFor()

static ilDAVServer::_getWebfolderInstructionsFor (   $webfolderTitle,   $webfolderURI,   $webfolderURI_IE,   $webfolderURI_Konqueror,   $webfolderURI_Nautilus,   $os = 'unknown',   $osFlavor = 'unknown'  )

static

Gets Webfolder mount instructions for the specified webfolder.

The following placeholders are currently supported:

[WEBFOLDER_TITLE] - the title of the webfolder [WEBFOLDER_URI] - the URL for mounting the webfolder with standard compliant WebDAV clients [WEBFOLDER_URI_IE] - the URL for mounting the webfolder with Internet Explorer [WEBFOLDER_URI_KONQUEROR] - the URL for mounting the webfolder with Konqueror [WEBFOLDER_URI_NAUTILUS] - the URL for mounting the webfolder with Nautilus [IF_WINDOWS]...[/IF_WINDOWS] - conditional contents, with instructions for Windows [IF_MAC]...[/IF_MAC] - conditional contents, with instructions for Mac OS X [IF_LINUX]...[/IF_LINUX] - conditional contents, with instructions for Linux [ADMIN_MAIL] - the mailbox address of the system administrator

Parameters

String	Title of the webfolder
String	Mount URI of the webfolder for standards compliant WebDAV clients
String	Mount URI of the webfolder for IE
String	Mount URI of the webfolder for Konqueror
String	Mount URI of the webfolder for Nautilus
String	Operating system: 'windows', 'unix' or 'unknown'.
String	Operating system flavor: 'xp', 'vista', 'osx', 'linux' or 'unknown'.

Returns

String HTML text.

Definition at line 2051 of file class.ilDAVServer.php.

References $_SERVER, $ilSetting, and _getDefaultWebfolderInstructions().

Referenced by showMountInstructions().

        {
                global $ilSetting;

                $settings = new ilSetting('file_access');
                $str = $settings->get('custom_webfolder_instructions', '');
                if (strlen($str) == 0 || ! $settings->get('custom_webfolder_instructions_enabled'))
                {
                        $str = ilDAVServer::_getDefaultWebfolderInstructions();
                }
                if(is_file('Customizing/clients/'.CLIENT_ID.'/webdavtemplate.htm')){
                        $str = fread(fopen('Customizing/clients/'.CLIENT_ID.'/webdavtemplate.htm', "rb"),filesize('Customizing/clients/'.CLIENT_ID.'/webdavtemplate.htm'));
                }
                $str=utf8_encode($str);

                preg_match_all('/(\\d+)/', $webfolderURI, $matches);
                $refID=$matches[0][0];
                
                $str = str_replace("[WEBFOLDER_ID]", $refID, $str);
                $str = str_replace("[WEBFOLDER_TITLE]", $webfolderTitle, $str);
                $str = str_replace("[WEBFOLDER_URI]", $webfolderURI, $str);
                $str = str_replace("[WEBFOLDER_URI_IE]", $webfolderURI_IE, $str);
                $str = str_replace("[WEBFOLDER_URI_KONQUEROR]", $webfolderURI_Konqueror, $str);
                $str = str_replace("[WEBFOLDER_URI_NAUTILUS]", $webfolderURI_Nautilus, $str);
                $str = str_replace("[ADMIN_MAIL]", $ilSetting->get("admin_email"), $str);

                if(strpos($_SERVER['HTTP_USER_AGENT'],'MSIE')!==false){
                        $str = preg_replace('/\[IF_IEXPLORE\]((?:.|\n)*)\[\/IF_IEXPLORE\]/','\1', $str);
                }else{
                        $str = preg_replace('/\[IF_NOTIEXPLORE\]((?:.|\n)*)\[\/IF_NOTIEXPLORE\]/','\1', $str);
                }
                
                switch ($os)
                {
                        case 'windows' :
                                $operatingSystem = 'WINDOWS';
                                break;
                        case 'unix' :
                                switch ($osFlavor)
                                {
                                        case 'osx' :
                                                $operatingSystem = 'MAC';
                                                break;
                                        case 'linux' :
                                                $operatingSystem = 'LINUX';
                                                break;
                                        default :
                                                $operatingSystem = 'LINUX';
                                                break;
                                }
                                break;
                        default :
                                $operatingSystem = 'UNKNOWN';
                                break;
                }

                if ($operatingSystem != 'UNKNOWN')
                {
                        $str = preg_replace('/\[IF_'.$operatingSystem.'\]((?:.|\n)*)\[\/IF_'.$operatingSystem.'\]/','\1', $str);
                        $str = preg_replace('/\[IF_([A-Z_]+)\](?:(?:.|\n)*)\[\/IF_\1\]/','', $str);
                }
                else
                {
                        $str = preg_replace('/\[IF_([A-Z_]+)\]((?:.|\n)*)\[\/IF_\1\]/','\2', $str);
                }
                return $str;
        }

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_isActionsVisible()

static ilDAVServer::_isActionsVisible ( )

static

Static getter.

Returns true, if WebDAV actions are visible for repository items.

Returns

boolean value

Definition at line 2004 of file class.ilDAVServer.php.

Referenced by ilContainerGUI\lockObject().

        {
                global $ilClientIniFile;
                return $ilClientIniFile->readVariable('file_access','webdav_actions_visible') == '1';
        }

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_isActive()

static ilDAVServer::_isActive ( )

static

Static getter.

Returns true, if the WebDAV server is active.

THe WebDAV Server is active, if the variable file_access::webdav_enabled is set in the client ini file, and if PEAR Auth_HTTP is installed.

Returns

boolean value

Definition at line 1993 of file class.ilDAVServer.php.

Referenced by ilInfoScreenGUI\addObjectSections(), ilPersonalSettingsGUI\initPasswordForm(), ilContainerGUI\lockObject(), ilObjectGUI\prepareOutput(), and ilObjTestGUI\prepareSubGuiOutput().

        {
                global $ilClientIniFile;
                return $ilClientIniFile->readVariable('file_access','webdav_enabled') == '1' &&
                         @include_once("Auth/HTTP.php");
        }

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checkLock()

ilDAVServer::checkLock (   $path )

protected

checkLock() helper

Parameters

string

resource path to check for locks

Returns

array with the following entries: { type => "write" scope => "exclusive" | "shared" depth => 0 | -1 owner => string token => string expires => timestamp

Definition at line 1538 of file class.ilDAVServer.php.

References $locks, HTTP_WebDAV_Server\$path, $result, getLogin(), toObjectPath(), and writelog().

        {
                global $ilias;

                $this->writelog('checkLock('.$path.')');
                $result = null;

                // get dav object for path
                //$objDAV = $this->getObject($path);

                // convert DAV path into ilObjectDAV path
                $objPath = $this->toObjectPath($path);
                if (! is_null($objPath))
                {
                        $objDAV = $objPath[count($objPath) - 1];
                        $locks = $this->locks->getLocksOnPathDAV($objPath);
                        foreach ($locks as $lock)
                        {
                                $isLastPathComponent = $lock['obj_id'] == $objDAV->getObjectId()
                                && $lock['node_id'] == $objDAV->getNodeId();

                                // Check all locks on last object in path,
                                // but only locks with depth infinity on parent objects.
                                if ($isLastPathComponent || $lock['depth'] == 'infinity')
                                {
                                        // DAV Clients expects to see their own owner name in
                                        // the locks. Since these names are not unique (they may
                                        // just be the name of the local user running the DAV client)
                                        // we return the ILIAS user name in all other cases.
                                        if ($lock['ilias_owner'] == $ilias->account->getId())
                                        {
                                                $owner = $lock['dav_owner'];
                                        } else {
                                                $owner = $this->getLogin($lock['ilias_owner']);
                                        }

                                        // FIXME - Shouldn't we collect all locks instead of
                                        //         using an arbitrary one?
                                        $result = array(
                                                "type"    => "write",
                                                "obj_id"   => $lock['obj_id'],
                                                "node_id"   => $lock['node_id'],
                                                "scope"   => $lock['scope'],
                                                "depth"   => $lock['depth'],
                                                "owner"   => $owner,
                                                "token"   => $lock['token'],
                                                "expires" => $lock['expires']
                                        );
                                        if ($lock['scope'] == 'exclusive')
                                        {
                                                // If there is an exclusive lock in the path, it
                                                // takes precedence over all non-exclusive locks in
                                                // parent nodes. Therefore we can can finish collecting
                                                // locks.
                                                break;
                                        }
                                }
                        }
                }
                $this->writelog('checkLock('.$path.'):'.var_export($result,true));

                return $result;
        }

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COPY()

ilDAVServer::COPY	(		$options,
			$del = false
	)

COPY method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1260 of file class.ilDAVServer.php.

References $ilUser, $options, ilChangeEvent\_recordReadEvent(), ilChangeEvent\_recordWriteEvent(), davBasename(), davDeslashify(), getObject(), and writelog().

        {
                global $ilUser;
                $this->writelog('COPY('.var_export($options, true).' ,del='.$del.')');
                $this->writelog('COPY '.$options['path'].' '.$options['dest']);

                // no copying to different WebDAV Servers
                if (isset($options["dest_url"])) {
                        return "502 bad gateway";
                }

                $src = $this->davDeslashify($options['path']);
                $srcParent = dirname($src);
                $srcName = $this->davBasename($src);
                $dst = $this->davDeslashify($options['dest']);
                $dstParent = dirname($dst);
                $dstName = $this->davBasename($dst);

                // sanity check
                if ($src == $dst)
                {
                        return '409 Conflict'; // src and dst are the same
                }

                if (substr($dst,strlen($src)+1) == $src.'/')
                {
                        return '409 Conflict'; // dst is in subtree of src
                }

                $this->writelog('COPY src='.$src.' dst='.$dst);
                // get dav object for path
                $srcDAV =& $this->getObject($src);
                $dstDAV =& $this->getObject($dst);
                $dstParentDAV =& $this->getObject($dstParent);

                if (is_null($srcDAV) || $srcDAV->isNullResource())
                {
                        return '409 Conflict'; // src does not exist
                }
                if (is_null($dstParentDAV) || $dstParentDAV->isNullResource())
                {
                        return '409 Conflict'; // parent of dst does not exist
                }
                $isOverwritten = false;

                // XXX Handle nulltype for dstDAV
                if (! is_null($dstDAV))
                {
                        if ($options['overwrite'] == 'T')
                        {
                                if ($dstDAV->isPermitted('delete'))
                                {
                                        $dstParentDAV->remove($dstDAV);
                                        ilChangeEvent::_recordWriteEvent($dstDAV->getObjectId(), $ilUser->getId(), 'delete', $dstParentDAV->getObjectId());

                                        $dstDAV = null;
                                        $isOverwritten = true;
                                } else {
                                        return '403 Forbidden';
                                }
                        } else {
                                        return '412 Precondition Failed';
                        }
                }

                if (! $dstParentDAV->isPermitted('create', $srcDAV->getILIASType()))
                {
                        return '403 Forbidden';
                }
                $dstDAV = $dstParentDAV->addCopy($srcDAV, $dstName);

                // Record write event
                ilChangeEvent::_recordReadEvent($srcDAV->getILIASType(), $srcDAV->getRefId(),
                        $srcDAV->getObjectId(), $ilUser->getId());
                ilChangeEvent::_recordWriteEvent($dstDAV->getObjectId(), $ilUser->getId(), 'create', $dstParentDAV->getObjectId());             

                return ($isOverwritten) ? '204 No Content' : '201 Created';
        }

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davBasename()

ilDAVServer::davBasename (   $path )

private

Private implementation of PHP basename() function.

The PHP basename() function does not work properly with filenames that contain international characters. e.g. basename('/x/ö') returns 'x' instead of 'ö'

Definition at line 1763 of file class.ilDAVServer.php.

References HTTP_WebDAV_Server\$path.

Referenced by COPY(), LOCK(), MKCOL(), MOVE(), and PUT().

        {
                $components = split('/',$path);
                return count($components) == 0 ? '' : $components[count($components) - 1];
        }

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davDeslashify()

ilDAVServer::davDeslashify (   $path )

private

davDeslashify - make sure path does not end in a slash

Parameters

string

directory path

Returns

string directory path without trailing slash

Definition at line 1746 of file class.ilDAVServer.php.

References HTTP_WebDAV_Server\$path, UtfNormal\toNFC(), and writelog().

Referenced by COPY(), DELETE(), GET(), getDir(), LOCK(), MKCOL(), mountDir(), MOVE(), PROPFIND(), PROPPATCH(), PUT(), showMountInstructions(), and UNLOCK().

        {
                $path = UtfNormal::toNFC($path);

                if ($path[strlen($path)-1] == '/') {
                        $path = substr($path,0, strlen($path) - 1);
                }
                $this->writelog('davDeslashify:'.$path);
                return $path;
        }

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davUrlEncode()

ilDAVServer::davUrlEncode (   $path )

private

We do not implement this method, because authentication is done by ilias3/webdav.php.

private

Parameters

string	HTTP Authentication type (Basic, Digest, ...)
string	Username
string	Password

Returns

bool true on successful authentication / public function check_auth($type, $user, $pass) { $this->writelog('check_auth type='.$type.' user='.$user.' pass='.$pass);

if (! $user) { return false; } return true; } Encodes an URL. This function differs from the PHP urlencode() function in the following way:

• Unicode characters are composed into Unicode Normal Form NFC This ensures that WebDAV clients running on Windows and Mac OS X treat resource names that contain diacritic marks in the same way.
• Slash characters '/' are preserved This ensures that path components are properly recognized by WebDAV clients.
• Space characters are encoded as '%20' instead of '+'. This ensures proper handling of spaces by WebDAV clients.

Definition at line 261 of file class.ilDAVServer.php.

References HTTP_WebDAV_Server\$path, and UtfNormal\toNFC().

Referenced by getDir(), getFileURI(), getObjectURI(), and PROPFIND().

        {
                // We compose the path to Unicode Normal Form NFC
                // This ensures that diaeresis and other special characters
                // are treated uniformly on Windows and on Mac OS X
                $path = UtfNormal::toNFC($path);

                $c = explode('/',$path);
                for ($i = 0; $i < count($c); $i++)
                {
                        $c[$i] = str_replace('+','%20',urlencode($c[$i]));
                }
                return implode('/',$c);
        }

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DELETE()

ilDAVServer::DELETE

(

$options

)

DELETE method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1110 of file class.ilDAVServer.php.

References $ilUser, $options, HTTP_WebDAV_Server\$path, ilChangeEvent\_recordWriteEvent(), davDeslashify(), getObject(), and writelog().

Referenced by PUTfinished().

        {
                global $ilUser;

                $this->writelog('DELETE('.var_export($options, true).')');
                $this->writelog('DELETE '.$options['path']);

                // get dav object for path
                $path =& $this->davDeslashify($options['path']);
                $parentDAV =& $this->getObject(dirname($path));
                $objDAV =& $this->getObject($path);

                // sanity check
                if (is_null($objDAV) || $objDAV->isNullResource())
                {
                        return '404 Not Found';
                }
                if (! $objDAV->isPermitted('delete'))
                {
                        return '403 Forbidden';
                }

                $parentDAV->remove($objDAV);

                // Record write event
                ilChangeEvent::_recordWriteEvent($objDAV->getObjectId(), $ilUser->getId(), 'delete', $parentDAV->getObjectId());

                return '204 No Content';
        }

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fileinfo()

ilDAVServer::fileinfo (   $resourcePath,   $displayPath, &  $objDAV  )

private

Creates file info properties for a single file/resource.

Parameters

string	resource path
ilObjectDAV	resource DAV object

Returns

array resource properties

Definition at line 424 of file class.ilDAVServer.php.

References $info, $locks, $properties, HTTP_WebDAV_Server\mkprop(), and writelog().

Referenced by PROPFIND().

        {
                global $ilias;

                $this->writelog('fileinfo('.$resourcePath.')');
                // create result array
                $info = array();
                /* Some clients, for example WebDAV-Sync, need a trailing slash at the
                 * end of a resource path to a collection.
                 * However Mac OS X does not like this!
                 */
                if ($objDAV->isCollection() && $this->clientOSFlavor != 'osx') {
                        $info['path'] = $resourcePath.'/';
                } else {
                        $info['path'] = $resourcePath;
                }

                $info['props'] = array();

                // no special beautified displayname here ...
                $info["props"][] =& $this->mkprop("displayname", $displayPath);

                // creation and modification time
                $info["props"][] =& $this->mkprop("creationdate", $objDAV->getCreationTimestamp());
                $info["props"][] =& $this->mkprop("getlastmodified", $objDAV->getModificationTimestamp());

                // directory (WebDAV collection)
                $info["props"][] =& $this->mkprop("resourcetype", $objDAV->getResourceType());
                $info["props"][] =& $this->mkprop("getcontenttype", $objDAV->getContentType());
                $info["props"][] =& $this->mkprop("getcontentlength", $objDAV->getContentLength());

                // Only show supported locks for users who have write permission
                if ($objDAV->isPermitted('write'))
                {
                        $info["props"][] =& $this->mkprop("supportedlock",
                                '<D:lockentry>'
                                        .'<D:lockscope><D:exclusive/></D:lockscope>'
                                        .'<D:locktype><D:write/></D:locktype>'
                                .'</D:lockentry>'
                                .'<D:lockentry>'
                                        .'<D:lockscope><D:shared/></D:lockscope>'
                                        .'<D:locktype><D:write/></D:locktype>'
                                .'</D:lockentry>'
                        );
                }

                // Maybe we should only show locks on objects for users who have write permission.
                // But if we don't show these locks, users who have write permission in an object
                // further down in a hierarchy can't see who is locking their object.
                $locks = $this->locks->getLocksOnObjectDAV($objDAV);
                $lockdiscovery = '';
                foreach ($locks as $lock)
                {
                        // DAV Clients expects to see their own owner name in
                        // the locks. Since these names are not unique (they may
                        // just be the name of the local user running the DAV client)
                        // we return the ILIAS user name in all other cases.
                        if ($lock['ilias_owner'] == $ilias->account->getId())
                        {
                                $owner = $lock['dav_owner'];
                        } else {
                                $owner = '<D:href>'.$this->getLogin($lock['ilias_owner']).'</D:href>';
                        }
                        $this->writelog('lockowner='.$owner.' ibi:'.$lock['ilias_owner'].' davi:'.$lock['dav_owner']);

                        $lockdiscovery .=
                        '<D:activelock>'
                                .'<D:lockscope><D:'.$lock['scope'].'/></D:lockscope>'
                                //.'<D:locktype><D:'.$lock['type'].'/></D:locktype>'
                                .'<D:locktype><D:write/></D:locktype>'
                                .'<D:depth>'.$lock['depth'].'</D:depth>'
                                .'<D:owner>'.$owner.'</D:owner>'

                                // more than a million is considered an absolute timestamp
                                // less is more likely a relative value
                                .'<D:timeout>Second-'.(($lock['expires'] > 1000000) ? $lock['expires']-time():$lock['expires']).'</D:timeout>'
                                .'<D:locktoken><D:href>'.$lock['token'].'</D:href></D:locktoken>'
                        .'</D:activelock>'
                        ;
                }
                if (strlen($lockdiscovery) > 0)
                {
                        $info["props"][] =& $this->mkprop("lockdiscovery", $lockdiscovery);
                }

                // get additional properties from database
                $properties = $this->properties->getAll($objDAV);
                foreach ($properties as $prop)
                {
                        $info["props"][] = $this->mkprop($prop['namespace'], $prop['name'], $prop['value']);
                }

                //$this->writelog('fileinfo():'.var_export($info, true));
                return $info;
        }

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GET()

ilDAVServer::GET

(

&

$options

)

GET method handler.

If the path denotes a directory, and if URL contains the query string "mount", a WebDAV mount-request is sent to the client. If the path denotes a directory, and if URL contains the query string "mount-instructions", instructions for mounting the directory are sent to the client.

Parameters

array

parameter passing array

Returns

bool true on success

Definition at line 531 of file class.ilDAVServer.php.

References $_GET, $ilUser, $options, HTTP_WebDAV_Server\$path, ilChangeEvent\_recordReadEvent(), davDeslashify(), getDir(), getObject(), mountDir(), showMountInstructions(), and writelog().

        {
                global $ilUser;

                $this->writelog('GET('.var_export($options, true).')');
                $this->writelog('GET('.$options['path'].')');

                // get dav object for path
                $path = $this->davDeslashify($options['path']);
                $objDAV =& $this->getObject($path);

                // sanity check
                if (is_null($objDAV) || $objDAV->isNullResource())
                {
                        return false;
                }

                if (! $objDAV->isPermitted('visible,read'))
                {
                        return '403 Forbidden';
                }

                //  is this a collection?
                if ($objDAV->isCollection())
                {
                        if (isset($_GET['mount']))
                        {
                                return $this->mountDir($objDAV, $options);
                        } 
                        else if (isset($_GET['mount-instructions']))
                        {
                                return $this->showMountInstructions($objDAV, $options);
                        } 
                        else 
                        {
                                return $this->getDir($objDAV, $options);
                        }
                }
                // detect content type
                $options['mimetype'] =& $objDAV->getContentType();
                // detect modification time
                // see rfc2518, section 13.7
                // some clients seem to treat this as a reverse rule
                // requiring a Last-Modified header if the getlastmodified header was set
                $options['mtime'] =& $objDAV->getModificationTimestamp();

                // detect content length
                $options['size'] =& $objDAV->getContentLength();

                // get content as stream or as data array
                $options['stream'] =& $objDAV->getContentStream();
                if (is_null($options['stream']))
                {
                        $options['data'] =& $objDAV->getContentData();
                }

                // Record read event and catch up write events
                ilChangeEvent::_recordReadEvent($objDAV->getILIASType(), $objDAV->getRefId(),
                        $objDAV->getObjectId(), $ilUser->getId());
                
                $this->writelog('GET:'.var_export($options, true));

                return true;
        }

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getDir()

ilDAVServer::getDir ( &  $objDAV, &  $options  )

private

GET method handler for directories.

This is a very simple mod_index lookalike. See RFC 2518, Section 8.4 on GET/HEAD for collections

Parameters

ilObjectDAV

dav object handler

Returns

void function has to handle HTTP response itself

Definition at line 724 of file class.ilDAVServer.php.

References $lng, $options, HTTP_WebDAV_Server\$path, davDeslashify(), davUrlEncode(), exit, and isFileHidden().

Referenced by GET().

        {
                global $ilias, $lng;

                // Activate tree cache
                global $tree;
                //$tree->useCache(true);

                $path = $this->davDeslashify($options['path']);

                // The URL of a directory must end with a slash.
                // If it does not we are redirecting the browser.
                // The slash is required, because we are using relative links in the
                // HTML code we are generating below.
                if ($path.'/' != $options['path'])
                {
                        header('Location: '.$this->base_uri.$path.'/');
                        exit;
                }

                header('Content-Type: text/html; charset=UTF-8');

                // fixed width directory column format
                $format = "%15s  %-19s  %-s\n";

                echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
                echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN\"\n";
                echo "  \"http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd\">\n";
                echo "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n";
                echo "<head>\n";
                echo "<title>".sprintf($lng->txt('webfolder_index_of'), $path)."</title>\n";

                // Create "anchorClick" behavior for for Internet Explorer
                // This allows to create a link to a webfolder
                echo "<style type=\"text/css\">\n";
                echo "<!--\n";
                echo "a {\n";
                echo "  behavior:url(#default#AnchorClick);\n";
                echo "}\n";
                echo "-->\n";
                echo "</style>\n";

                echo "</head><body>\n";

                $hrefPath = '';
                $pathComponents = explode('/',$path);
                $uriComponents = array();
                foreach ($pathComponents as $component)
                {
                        $uriComponents[] = $this->davUrlEncode($component);
                }
                for ($i = 0; $i < count($pathComponents); $i++)
                {
                        $displayName = htmlspecialchars($pathComponents[$i]);
                        if ($i != 0) {
                                $hrefPath .= '/';
                        }
                        $uriPath = implode('/', array_slice($uriComponents,0,$i + 1));
                        if ($i < 2)
                        {
                                // The first two path elements consist of the webdav.php script
                                // and the client id. These elements are not part of the
                                // directory structure and thus are not represented as links.
                                $hrefPath .= $displayName;
                        }
                        else
                        {
                                $hrefPath .= '<a href="'.$this->base_uri.$uriPath.'/">'.$displayName.'</a>';
                        }
                }
                echo "<h3>".sprintf($lng->txt('webfolder_index_of'), $hrefPath)."</h3>\n";

                // Display user id
                if ($ilias->account->getLogin() == 'anonymous')
                {
                        echo "<p><font size=\"-1\">".$lng->txt('not_logged_in')."</font><br>\n";
                } else {
                        echo "<p><font size=\"-1\">".$lng->txt('login_as')." <i>"
                                .$ilias->account->getFirstname().' '
                                .$ilias->account->getLastname().' '
                                .' '.$ilias->account->getLogin().'</i> '
                                .', '.$lng->txt('client').' <i>'.$ilias->getClientId().'</i>.'
                                ."</font><p>\n";
                }

                // Create "open as webfolder" link
                $href = $this->base_uri.$uriPath;
                // IE can not mount long paths. If the path has more than one element, we
                // create a relative path with a ref-id.
                if (count($pathComponents) > 2)
                {
                        $hrefIE = $this->base_uri.'/'.CLIENT_ID.'/ref_'.$objDAV->getRefId();
                } else {
                        $hrefIE = $href;
                }
                echo "<p><font size=\"-1\">".
                                sprintf($lng->txt('webfolder_dir_info'), "$href?mount-instructions").
                                "</font></p>\n";
                echo "<p><font size=\"-1\">".
                                sprintf($lng->txt('webfolder_mount_dir_with'),
                                        "$hrefIE\" folder=\"$hrefIE", // Internet Explorer
                                        'webdav'.substr($href,4), // Konqueror
                                        'dav'.substr($href,4), // Nautilus
                                        $href.'?mount' // RFC 4709
                                )
                        ."</font></p>\n";

                echo "<pre>";
                printf($format, $lng->txt('size'), $lng->txt('last_change'), $lng->txt('filename'));
                echo "<hr>";

                $collectionCount = 0;
                $fileCount = 0;
                $children =& $objDAV->childrenWithPermission('visible,read');
                foreach ($children as $childDAV) {
                        if ($childDAV->isCollection() && !$this->isFileHidden($childDAV))
                        {
                                $collectionCount++;
                                $name = $this->davUrlEncode($childDAV->getResourceName());
                                printf($format,
                                        '-',
                                        strftime("%Y-%m-%d %H:%M:%S", $childDAV->getModificationTimestamp()),
                                        '<a href="'.$name.'/'.'">'.$childDAV->getDisplayName()."</a>");
                        }
                }
                foreach ($children as $childDAV) {
                        if ($childDAV->isFile() && !$this->isFileHidden($childDAV))
                        {
                                $fileCount++;
                                $name = $this->davUrlEncode($childDAV->getResourceName());
                                printf($format,
                                        number_format($childDAV->getContentLength()),
                                        strftime("%Y-%m-%d %H:%M:%S", $childDAV->getModificationTimestamp()),
                                        '<a href="'.$name.'">'.$childDAV->getDisplayName()."</a>");
                        }
                }
                foreach ($children as $childDAV) {
                        if ($childDAV->isNullResource() && !$this->isFileHidden($childDAV))
                        {
                                $name = $this->davUrlEncode($childDAV->getResourceName());
                                printf($format,
                                        'Lock',
                                        strftime("%Y-%m-%d %H:%M:%S", $childDAV->getModificationTimestamp()),
                                        '<a href="'.$name.'">'.$childDAV->getDisplayName()."</a>");
                        }
                }
                echo "<hr>";
                echo $collectionCount.' '.$lng->txt(($collectionCount == 1) ? 'folder' : 'folders').', ';
                echo $fileCount.' '.$lng->txt(($fileCount == 1) ? 'file' : 'files').'.';
                echo "</pre>";
                echo "</body></html>\n";

                exit;
        }

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getFileURI()

ilDAVServer::getFileURI	(		$refId,
			$ressourceName = null,
			$parentRefId = null
	)

Returns an URI for getting a file object using WebDAV.

Browsers can use this URI to download a file from ILIAS.

Note: This could be the same URI that is returned by getObjectURI. But we use a different URI, because we want to use the regular ILIAS authentication method, if no session exists, and we want to be able to download a file from the repository, even if the name of the file object is not unique.

Parameters

refId	of the file object.
ressourceName	title of the file object (if known), to reduce SQL queries
parentRefId	refId of parent object (if known), to reduce SQL queries

Returns

Returns the URI or null if the URI can not be constructed.

Definition at line 1942 of file class.ilDAVServer.php.

References HTTP_WebDAV_Server\$uri, davUrlEncode(), and isWebDAVoverHTTPS().

        {
                $nodeId = 0;
                $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:").
                                "//$_SERVER[HTTP_HOST]$_SERVER[SCRIPT_NAME]";
                $baseUri = substr($baseUri,0,strrpos($baseUri,'/')).'/webdav.php/'.CLIENT_ID;

                if (! is_null($ressourceName) && ! is_null($parentRefId))
                {
                        // Quickly create URI from the known data without needing SQL queries
                        $uri = $baseUri.'/file_'.$refId.'/'.$this->davUrlEncode($ressourceName);
                } else {
                        // Create URI and use some SQL queries to get the missing data
                        global $tree;
                        $nodePath = $tree->getNodePath($refId);

                        if (is_null($nodePath) || count($nodePath) < 2)
                        {
                                // No object path? Return null - file is not in repository.
                                $uri = null;
                        } else {
                                $uri = $baseUri.'/file_'.$nodePath[count($nodePath) - 1]['child'].'/'.
                                                $this->davUrlEncode($nodePath[count($nodePath) - 1]['title']);
                        }
                }
                return $uri;
        }

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getFolderURI()

ilDAVServer::getFolderURI	(		$refId,
			$nodeId = 0,
			$ressourceName = null,
			$parentRefId = null
	)

Returns an URI for mounting the repository object as a webfolder using Internet Explorer and Firefox with the "openwebfolder" plugin.

The FolderURI is only in effect on Windows. Therefore we don't need to deal with other pecularities.

The URI can be used as the value of a "folder" attribute inside of an HTML anchor tag "<a>".

Parameters

refId	of the repository object.
nodeId	of a childnode of the repository object.
ressourceName	ressource name (if known), to reduce SQL queries
parentRefId	refId of parent object (if known), to reduce SQL queries

Definition at line 1860 of file class.ilDAVServer.php.

References $query, HTTP_WebDAV_Server\$uri, and isWebDAVoverHTTPS().

        {
                if ($this->clientOS == 'windows') {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:");
                        $query = null;
                } else if ($this->clientBrowser == 'konqueror') {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "webdavs:" : "webdav:");
                        $query = null;
                } else if ($this->clientBrowser == 'nautilus') {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "davs:" : "dav:");
                        $query = null;
                } else {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:");
                        $query = null;
                }
                $baseUri.= "//$_SERVER[HTTP_HOST]$_SERVER[SCRIPT_NAME]";
                $baseUri = substr($baseUri,0,strrpos($baseUri,'/')).'/webdav.php/'.CLIENT_ID;

                $uri = $baseUri.'/ref_'.$refId.'/';
                if ($query != null)
                {
                        $uri .= '?'.$query;
                }

                return $uri;
        }

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getInstance()

static ilDAVServer::getInstance ( )

static

Get singelton iunstance.

Returns

Definition at line 187 of file class.ilDAVServer.php.

References ilDAVServer().

Referenced by ilObjFileAccessSettingsGUI\editWebDAVSettings(), ilObjGroupListGUI\getCommandLink(), ilObjFolderListGUI\getCommandLink(), ilObjCategoryListGUI\getCommandLink(), ilObjectListGUI\getCommandLink(), and ilContainerGUI\showPasswordInstructionObject().

        {
                if(self::$instance != NULL)
                {
                        return self::$instance;
                }
                return self::$instance = new ilDAVServer();
        }

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getLogin()

ilDAVServer::getLogin (   $userId )

protected

Returns the login for the specified user id, or null if the user does not exist.

Definition at line 1606 of file class.ilDAVServer.php.

References ilObjUser\_lookupLogin(), and writelog().

Referenced by checkLock().

        {
                $login = ilObjUser::_lookupLogin($userId);
                $this->writelog('getLogin('.$userId.'):'.var_export($login,true));
                return $login;
        }

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getMountURI()

ilDAVServer::getMountURI	(		$refId,
			$nodeId = 0,
			$ressourceName = null,
			$parentRefId = null,
			$genericURI = false
	)

Returns an URI for mounting the repository object as a webfolder.

The URI can be used as the value of a "href" attribute attribute inside of an HTML anchor tag "<a>".

Parameters

refId	of the repository object.
nodeId	of a childnode of the repository object.
ressourceName	ressource name (if known), to reduce SQL queries
parentRefId	refId of parent object (if known), to reduce SQL queries
genericURI	boolean Returns a generic mount URI, which works on all platforms which support WebDAV as in the IETF specification.

Definition at line 1817 of file class.ilDAVServer.php.

References $query, HTTP_WebDAV_Server\$uri, and isWebDAVoverHTTPS().

        {
                if ($genericURI) {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:");
                        $query = null;
                } else if ($this->clientOS == 'windows') {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:");
                        $query = 'mount-instructions';
                } else if ($this->clientBrowser == 'konqueror') {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "webdavs:" : "webdav:");
                        $query = null;
                } else if ($this->clientBrowser == 'nautilus') {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "davs:" : "dav:");
                        $query = null;
                } else {
                        $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:");
                        $query = 'mount-instructions';
                }
                $baseUri.= "//$_SERVER[HTTP_HOST]$_SERVER[SCRIPT_NAME]";
                $baseUri = substr($baseUri,0,strrpos($baseUri,'/')).'/webdav.php/'.CLIENT_ID;

                $uri = $baseUri.'/ref_'.$refId.'/';
                if ($query != null)
                {
                        $uri .= '?'.$query;
                }

                return $uri;
        }

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getObject()

ilDAVServer::getObject (   $davPath )

private

Gets a DAV object for the specified path.

Parameters

String

davPath A DAV path expression.

Returns

ilObjectDAV object or null, if the path does not denote an object.

Definition at line 1620 of file class.ilDAVServer.php.

References $ref_id, ilObjectDAV\createObject(), and toNodePath().

Referenced by COPY(), DELETE(), GET(), LOCK(), MKCOL(), MOVE(), PROPFIND(), PROPPATCH(), PUT(), and UNLOCK().

        {
                global $tree;


                // If the second path elements starts with 'file_', the following
                // characters of the path element directly identify the ref_id of
                // a file object.
                $davPathComponents = split('/',substr($davPath,1));
                if (count($davPathComponents) > 1 &&
                        substr($davPathComponents[1],0,5) == 'file_')
                {
                        $ref_id = substr($davPathComponents[1],5);
                        $nodePath = $tree->getNodePath($ref_id, $tree->root_id);

                        // Poor IE needs this, in order to successfully display
                        // PDF documents
                        header('Pragma: private');
                }
                else
                {
                        $nodePath = $this->toNodePath($davPath);
                        if ($nodePath == null && count($davPathComponents) == 1)
                        {
                                return ilObjectDAV::createObject(-1,'mountPoint');
                        }
                }
                if (is_null($nodePath))
                {
                        return null;
                } else {
                        $top = $nodePath[count($nodePath)  - 1];
                        return ilObjectDAV::createObject($top['child'],$top['type']);
                }
        }

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getObjectURI()

ilDAVServer::getObjectURI	(		$refId,
			$ressourceName = null,
			$parentRefId = null
	)

Returns an URI for getting a object using WebDAV by its name.

WebDAV clients can use this URI to access the object from ILIAS.

Parameters

refId	of the object.
ressourceName	object title (if known), to reduce SQL queries
parentRefId	refId of parent object (if known), to reduce SQL queries

Returns

Returns the URI or null if the URI can not be constructed.

Definition at line 1897 of file class.ilDAVServer.php.

References HTTP_WebDAV_Server\$uri, davUrlEncode(), and isWebDAVoverHTTPS().

        {
                $nodeId = 0;
                $baseUri = ($this->isWebDAVoverHTTPS() ? "https:" : "http:").
                                "//$_SERVER[HTTP_HOST]$_SERVER[SCRIPT_NAME]";
                $baseUri = substr($baseUri,0,strrpos($baseUri,'/')).'/webdav.php/'.CLIENT_ID;

                if (! is_null($ressourceName) && ! is_null($parentRefId))
                {
                        // Quickly create URI from the known data without needing SQL queries
                        $uri = $baseUri.'/ref_'.$parentRefId.'/'.$this->davUrlEncode($ressourceName);
                } else {
                        // Create URI and use some SQL queries to get the missing data
                        global $tree;
                        $nodePath = $tree->getNodePath($refId);

                        if (is_null($nodePath) || count($nodePath) < 2)
                        {
                                // No object path? Return null - file is not in repository.
                                $uri = null;
                        } else {
                                $uri = $baseUri.'/ref_'.$nodePath[count($nodePath) - 2]['child'].'/'.
                                                $this->davUrlEncode($nodePath[count($nodePath) - 1]['title']);
                        }
                }
                return $uri;
        }

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getUploadMaxFilesize()

ilDAVServer::getUploadMaxFilesize ( )

private

Gets the maximum permitted upload filesize from php.ini in bytes.

Returns

int Upload Max Filesize in bytes.

Definition at line 2126 of file class.ilDAVServer.php.

Referenced by PUT().

                                            {
        $val = ini_get('upload_max_filesize');

        $val = trim($val);
        $last = strtolower($val[strlen($val)-1]);
        switch($last) {
            // The 'G' modifier is available since PHP 5.1.0
            case 'g':
                $val *= 1024;
            case 'm':
                $val *= 1024;
            case 'k':
                $val *= 1024;
        }

        return $val;
    }

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ilDAVServer()

ilDAVServer::ilDAVServer

(

)

Constructor.

Parameters

void

Deprecated:

should be used only as private constructor to avoid one instance for every item on the personal dektop or in the repository Use ilDAVServer::getInstance()

Definition at line 126 of file class.ilDAVServer.php.

References $_SERVER, HTTP_WebDAV_Server\HTTP_WebDAV_Server(), and writelog().

Referenced by getInstance().

        {
                $this->writelog("<constructor>");

                // Initialize the WebDAV server and create
                // locking and property support objects
                $this->HTTP_WebDAV_Server();
                $this->locks = new ilDAVLocks();
                $this->properties = new ilDAVProperties();
                //$this->locks->createTable();
                //$this->properties->createTable();

                // Guess operating system, operating system flavor and browser of the webdav client
                //
                // - We need to know the operating system in order to properly
                // hide hidden resources in directory listings.
                //
                // - We need the operating system flavor and the browser to
                // properly support mounting of a webdav folder.
                //
                $userAgent = strtolower($_SERVER['HTTP_USER_AGENT']);
                $this->writelog('userAgent='.$userAgent);
                if (strpos($userAgent,'windows') !== false
                || strpos($userAgent,'microsoft') !== false)
                {
                        $this->clientOS = 'windows';
                        if(strpos($userAgent,'nt 5.1') !== false){
                            $this->clientOSFlavor = 'xp';
                        }else{
                            $this->clientOSFlavor = 'nichtxp';
                        }

                } else if (strpos($userAgent,'darwin') !== false
                || strpos($userAgent,'macintosh') !== false
                || strpos($userAgent,'linux') !== false
                || strpos($userAgent,'solaris') !== false
                || strpos($userAgent,'aix') !== false
                || strpos($userAgent,'unix') !== false
                || strpos($userAgent,'gvfs') !== false // nautilus browser uses this ID
                )
                {
                        $this->clientOS = 'unix';
                        if (strpos($userAgent,'linux') !== false)
                        {
                                $this->clientOSFlavor = 'linux';
                        }
                        else if (strpos($userAgent,'macintosh') !== false)
                        {
                                $this->clientOSFlavor = 'osx';
                        }
                }
                if (strpos($userAgent,'konqueror') !== false)
                {
                        $this->clientBrowser = 'konqueror';
                }
        }

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isFileHidden()

ilDAVServer::isFileHidden ( &  $objDAV )

private

Returns true, if the resource has a file name which is hidden from the user.

Note, that resources with a hidden file name can still be accessed by a WebDAV client, if the client knows the resource name.

- We hide all Null Resources who haven't got an active lock
- We hide all files with the prefix "." from Windows DAV Clients.
- We hide all files which contain characters that are not allowed on Windows from Windows DAV Clients.
- We hide the files with the prefix " ~$" or the name "Thumbs.db" from Unix DAV Clients.

Definition at line 381 of file class.ilDAVServer.php.

References writelog().

Referenced by getDir(), PROPFIND(), and showMountInstructions().

        {
                // Hide null resources which haven't got an active lock
                if ($objDAV->isNullResource()) {
                        if (count($this->locks->getLocksOnObjectDAV($objDAV)) == 0) {
                                return;
                        }
                }

                $name = $objDAV->getResourceName();
                $isFileHidden = false;
                switch ($this->clientOS)
                {
                case 'unix' :
                        // Hide Windows thumbnail files, and files which start with '~$'.
                        $isFileHidden =
                                $name == 'Thumbs.db'
                                || substr($name, 0, 2) == '~$';
                        // Hide files which contain /
                        $isFileHidden |= preg_match('/\\//', $name);
                        break;
                case 'windows' :
                        // Hide files that start with '.'.
                        $isFileHidden = substr($name, 0, 1) == '.';
                        // Hide files which contain \ / : * ? " < > |
                        $isFileHidden |= preg_match('/\\\\|\\/|:|\\*|\\?|"|<|>|\\|/', $name);
                        break;
                default :
                        // Hide files which contain /
                        $isFileHidden |= preg_match('/\\//', $name);
                        break;
                }
                $this->writelog($this->clientOS.' '.$name.' isHidden:'.$isFileHidden.' clientOS:'.$this->clientOS);
                return $isFileHidden;
        }

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isWebDAVoverHTTPS()

ilDAVServer::isWebDAVoverHTTPS

(

)

Returns true, if the WebDAV server transfers data over HTTPS.

Returns

boolean Returns true if HTTPS is active.

Definition at line 1975 of file class.ilDAVServer.php.

References $https, $ilSetting, and $isHTTPS.

Referenced by getFileURI(), getFolderURI(), getMountURI(), getObjectURI(), and showMountInstructions().

                                            {
                if ($this->isHTTPS == null) {
                        global $ilSetting;
                        require_once './Services/Http/classes/class.ilHTTPS.php';
                        $https = new ilHTTPS();
                        $this->isHTTPS = $https->isDetected() || $ilSetting->get('https');
                }
                return $this->isHTTPS;
        }

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LOCK()

ilDAVServer::LOCK

(

&

$options

)

LOCK method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1377 of file class.ilDAVServer.php.

References $data, $options, HTTP_WebDAV_Server\$path, $success, davBasename(), davDeslashify(), getObject(), and writelog().

        {
                global $ilias;
                $this->writelog('LOCK('.var_export($options, true).')');
                $this->writelog('LOCK '.$options['path']);

                // Check if an object with the path exists.
                $path =& $this->davDeslashify($options['path']);
                $objDAV =& $this->getObject($path);
                // Handle null-object locking
                // --------------------------
                if (is_null($objDAV))
                {
                        $this->writelog('LOCK handling null-object locking...');

                        // If the name does not exist, we create a null-object for it
                        if (isset($options["update"]))
                        {
                                $this->writelog('LOCK lock-update failed on non-existing null-object.');
                                return '412 Precondition Failed';
                        }

                        $parent = dirname($path);
                        $parentDAV =& $this->getObject($parent);
                        if (is_null($parentDAV))
                        {
                                $this->writelog('LOCK lock failed on non-existing path to null-object.');
                                return '404 Not Found';
                        }
                        if (! $parentDAV->isPermitted('create', $parentDAV->getILIASFileType()) &&
                                ! $parentDAV->isPermitted('create', $parentDAV->getILIASCollectionType()))
                        {
                                $this->writelog('LOCK lock failed - creation of null object not permitted.');
                                return '403 Forbidden';
                        }

                        $objDAV =& $parentDAV->createNull($this->davBasename($path));
                        $this->writelog('created null resource for '.$path);
                }

                // ---------------------
                if (! $objDAV->isNullResource() && ! $objDAV->isPermitted('write'))
                {
                        $this->writelog('LOCK lock failed - user has no write permission.');
                        return '403 Forbidden';
                }

                // XXX - Check if there are other locks on the resource
                if (!isset($options['timeout']) || is_array($options['timeout']))
                {
                        $options["timeout"] = time()+360; // 6min.
                }

                if(isset($options["update"])) { // Lock Update
                        $this->writelog('LOCK update token='.var_export($options,true));
                        $success = $this->locks->updateLockWithoutCheckingDAV(
                                $objDAV,
                                $options['update'],
                                $options['timeout']
                        );
                        if ($success)
                        {
                                $data = $this->locks->getLockDAV($objDAV, $options['update']);
                                if ($data['ilias_owner'] == $ilias->account->getId())
                                {
                                        $owner = $data['dav_owner'];
                                } else {
                                        $owner = '<D:href>'.$this->getLogin($data['ilias_owner']).'</D:href>';
                                }
                                $options['owner'] = $owner;
                                $options['locktoken'] = $data['token'];
                                $options['timeout'] = $data['expires'];
                                $options['depth'] = $data['depth'];
                                $options['scope'] = $data['scope'];
                                $options['type'] = $data['scope'];
                        }

                } else {
                        $this->writelog('LOCK create new lock');

                        // XXX - Attempting to create a recursive exclusive lock
                        // on a collection must fail, if any of nodes in the subtree
                        // of the collection already has a lock.
                        // XXX - Attempting to create a recursive shared lock
                        // on a collection must fail, if any of nodes in the subtree
                        // of the collection already has an exclusive lock.
                        //$owner = (strlen(trim($options['owner'])) == 0) ? $ilias->account->getLogin() : $options['owner'];
                        $this->writelog('lock owner='.$owner);
                        $success = $this->locks->lockWithoutCheckingDAV(
                                $objDAV,
                                $ilias->account->getId(),
                                trim($options['owner']),
                                $options['locktoken'],
                                $options['timeout'],
                                $options['depth'],
                                $options['scope']
                        );
                }

                // Note: As a workaround for the Microsoft WebDAV Client, we return
                //       true/false here (resulting in the status '200 OK') instead of
                //       '204 No Content').
                //return ($success) ? '204 No Content' : false;
                return $success;
        }

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MKCOL()

ilDAVServer::MKCOL

(

$options

)

MKCOL method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1052 of file class.ilDAVServer.php.

References $_SERVER, $ilUser, $options, HTTP_WebDAV_Server\$path, $result, ilChangeEvent\_recordWriteEvent(), davBasename(), davDeslashify(), getObject(), and writelog().

        {
                global $ilUser;

                $this->writelog('MKCOL('.var_export($options, true).')');
                $this->writelog('MKCOL '.$options['path']);

                $path =& $this->davDeslashify($options['path']);
                $parent =& dirname($path);
                $name =& $this->davBasename($path);

                // No body parsing yet
                if(!empty($_SERVER["CONTENT_LENGTH"])) {
                        return "415 Unsupported media type";
                }

                // Check if an object with the path already exists.
                $objDAV =& $this->getObject($path);
                if (! is_null($objDAV))
                {
                        return '405 Method not allowed';
                }

                // get parent dav object for path
                $parentDAV =& $this->getObject($parent);

                // sanity check
                if (is_null($parentDAV) || ! $parentDAV->isCollection())
                {
                        return '409 Conflict';
                }

                if (! $parentDAV->isPermitted('create',$parentDAV->getILIASCollectionType()))
                {
                        return '403 Forbidden';
                }

                // XXX Implement code that Handles null resource here

                $objDAV = $parentDAV->createCollection($name);

                if ($objDAV != null)
                {
                        // Record write event
                        ilChangeEvent::_recordWriteEvent((int) $objDAV->getObjectId(), $ilUser->getId(), 'create', $parentDAV->getObjectId());
                }

                $result = ($objDAV != null) ? "201 Created" : "409 Conflict";
                return $result;
        }

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mountDir()

ilDAVServer::mountDir ( &  $objDAV, &  $options  )

private

Mount method handler for directories.

Mounting is done according to the internet draft RFC 4709 "Mounting WebDAV servers" "draft-reschke-webdav-mount-latest". See http://greenbytes.de/tech/webdav/draft-reschke-webdav-mount-latest.html

Parameters

ilObjectDAV

dav object handler

Returns

This function does not return. It exits PHP.

Definition at line 606 of file class.ilDAVServer.php.

References $options, HTTP_WebDAV_Server\$path, davDeslashify(), and exit.

Referenced by GET().

        {
                $path = $this->davDeslashify($options['path']);

                header('Content-Type: application/davmount+xml');

                echo "<dm:mount xmlns:dm=\"http://purl.org/NET/webdav/mount\">\n";
                echo "  </dm:url>".$this->base_uri."</dm:url>\n";

                $xmlPath = str_replace('&','&amp;',$path);
                $xmlPath = str_replace('<','&lt;',$xmlPath);
                $xmlPath = str_replace('>','&gt;',$xmlPath);

                echo "  </dm:open>$xmlPath</dm:open>\n";
                echo "</dm:mount>\n";

                exit;

        }

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MOVE()

ilDAVServer::MOVE

(

$options

)

MOVE method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1146 of file class.ilDAVServer.php.

References $ilUser, $options, ilChangeEvent\_recordWriteEvent(), davBasename(), davDeslashify(), getObject(), and writelog().

        {
                global $ilUser;

                $this->writelog('MOVE('.var_export($options, true).')');
                $this->writelog('MOVE '.$options['path'].' '.$options['dest']);

                // Get path names
                $src = $this->davDeslashify($options['path']);
                $srcParent = dirname($src);
                $srcName = $this->davBasename($src);
                $dst = $this->davDeslashify($options['dest']);

                $dstParent = dirname($dst);
                $dstName = $this->davBasename($dst);
                $this->writelog('move '.$dst.'   dstname='.$dstName);
                // Source and destination must not be the same
                if ($src == $dst)
                {
                                return '409 Conflict (source and destination are the same)';
                }

                // Destination must not be in a subtree of source
                if (substr($dst,strlen($src)+1) == $src.'/')
                {
                                return '409 Conflict (destination is in subtree of source)';
                }

                // Get dav objects for path
                $srcDAV =& $this->getObject($src);
                $dstDAV =& $this->getObject($dst);
                $srcParentDAV =& $this->getObject($srcParent);
                $dstParentDAV =& $this->getObject($dstParent);

                // Source must exist
                if ($srcDAV == null)
                {
                                return '409 Conflict (source does not exist)';
                }

                // Overwriting is only allowed, if overwrite option is set to 'T'
                $isOverwritten = false;
                if ($dstDAV != null)
                {
                                if ($options['overwrite'] == 'T')
                                {
                                                // Delete the overwritten destination
                                                if ($dstDAV->isPermitted('delete'))
                                                {
                                                                $dstParentDAV->remove($dstDAV);
                                                                $dstDAV = null;
                                                                $isOverwritten = true;
                                                } else {
                                                                return '403 Not Permitted';
                                                }
                                } else {
                                                return '412 Precondition Failed';
                                }
                }

                // Parents of destination must exist
                if ($dstParentDAV == null)
                {
                                return '409 Conflict (parent of destination does not exist)';
                }

                if ($srcParent == $dstParent)
                {
                                // Rename source, if source and dest are in same parent

                                // Check permission
                                if (! $srcDAV->isPermitted('write'))
                                {
                                                return '403 Forbidden';
                                }
        $this->writelog('rename dstName='.$dstName);
                                $srcDAV->setResourceName($dstName);
                                $srcDAV->write();
                } else {
                                // Move source, if source and dest are in same parent


                                if (! $srcDAV->isPermitted('delete'))
                                {
                                                return '403 Forbidden';
                                }

                                if (! $dstParentDAV->isPermitted('create', $srcDAV->getILIASType()))
                                {
                                                return '403 Forbidden';
                                }
                                $dstParentDAV->addMove($srcDAV, $dstName);
                }

                // Record write event
                if ($isOverwritten)
                {
                        ilChangeEvent::_recordWriteEvent($srcDAV->getObjectId(), $ilUser->getId(), 'rename');
                }
                else
                {
                        ilChangeEvent::_recordWriteEvent($srcDAV->getObjectId(), $ilUser->getId(), 'remove', $srcParentDAV->getObjectId());
                        ilChangeEvent::_recordWriteEvent($srcDAV->getObjectId(), $ilUser->getId(), 'add', $dstParentDAV->getObjectId());
                }               

                return ($isOverwritten) ? '204 No Content' : '201 Created';
        }

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PROPFIND()

ilDAVServer::PROPFIND	(	&	$options,
		&	$files
	)

PROPFIND method handler.

Parameters

array	general parameter passing array
array	return array for file properties

Returns

bool true on success

Definition at line 283 of file class.ilDAVServer.php.

References $GLOBALS, $ilUser, $options, HTTP_WebDAV_Server\$path, ilChangeEvent\_recordReadEvent(), davDeslashify(), davUrlEncode(), fileinfo(), getObject(), isFileHidden(), and writelog().

        {
                // Activate tree cache
                global $tree;
                //$tree->useCache(true);

                $this->writelog('PROPFIND(options:'.var_export($options, true).' files:'.var_export($files, true).'.)');
                $this->writelog('PROPFIND '.$options['path']);

                // get dav object for path
                $path =& $this->davDeslashify($options['path']);
                $objDAV =& $this->getObject($path);

                // prepare property array
                $files['files'] = array();

                // sanity check
                if (is_null($objDAV)) {
                        return false;
                }
                if (! $objDAV->isPermitted('visible,read')) {
                        return '403 Forbidden';
                }

                // store information for the requested path itself
                // FIXME : create display name for object.
                $encodedPath = $this->davUrlEncode($path);
                
                $GLOBALS['ilLog']->write(print_r($encodedPath,true));

                $files['files'][] =& $this->fileinfo($encodedPath, $encodedPath, $objDAV);

                // information for contained resources requested?
                if (!empty($options['depth']))  {
                        // The breadthFirst list holds the collections which we have not
                        // processed yet. If depth is infinity we append unprocessed collections
                        // to the end of this list, and remove processed collections from
                        // the beginning of this list.
                        $breadthFirst = array($objDAV);
                        $objDAV->encodedPath = $encodedPath;

                        while (count($breadthFirst) > 0) {
                                // remove a collection from the beginning of the breadthFirst list
                                $collectionDAV = array_shift($breadthFirst);
                                $childrenDAV =& $collectionDAV->childrenWithPermission('visible,read');
                                foreach ($childrenDAV as $childDAV)
                                {
                                        // On duplicate names, work with the older object (the one with the
                                        // smaller object id).
                                        foreach ($childrenDAV as $duplChildDAV)
                                        {
                                                if ($duplChildDAV->getObjectId() < $childDAV->getObjectId() &&
                                                                $duplChildDAV->getResourceName() == $childDAV->getResourceName())
                                                {
                                                        continue 2;
                                                }
                                        }

                                        // only add visible objects to the file list
                                        if (!$this->isFileHidden($childDAV))
                                        {
                                                $this->writelog('PROPFIND() child ref_id='.$childDAV->getRefId());
                                                $files['files'][] =& $this->fileinfo(
                                                        $collectionDAV->encodedPath.'/'.$this->davUrlEncode($childDAV->getResourceName()),
                                                        $collectionDAV->encodedPath.'/'.$this->davUrlEncode($childDAV->getDisplayName()),
                                                        $childDAV
                                                );
                                                if ($options['depth']=='infinity' && $childDAV->isCollection()) {
                                                        // add a collection to the end of the breadthFirst list
                                                        $breadthFirst[] = $childDAV;
                                                        $childDAV->encodedPath = $collectionDAV->encodedPath.'/'.$this->davUrlEncode($childDAV->getResourceName());
                                                }
                                        }
                                }
                        }
                }

                // Record read event but don't catch up with write events, because
                // with WebDAV, a user can not see all objects contained in a folder.
                global $ilUser;
                ilChangeEvent::_recordReadEvent($objDAV->getILIASType(), $objDAV->getRefId(),
                        $objDAV->getObjectId(), $ilUser->getId(), false);
                
                // ok, all done
                $this->writelog('PROPFIND():true options='.var_export($options, true).' files='.var_export($files,true));
                return true;
        }

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PROPPATCH()

ilDAVServer::PROPPATCH

(

&

$options

)

PROPPATCH method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1345 of file class.ilDAVServer.php.

References $options, HTTP_WebDAV_Server\$path, davDeslashify(), getObject(), and writelog().

        {
                $this->writelog('PROPPATCH(options='.var_export($options, true).')');
                $this->writelog('PROPPATCH '.$options['path']);

                // get dav object for path
                $path =& $this->davDeslashify($options['path']);
                $objDAV =& $this->getObject($path);

                // sanity check
                if (is_null($objDAV) || $objDAV->isNullResource()) return false;

                $isPermitted = $objDAV->isPermitted('write');
                foreach($options['props'] as $key => $prop) {
                        if (!$isPermitted || $prop['ns'] == 'DAV:')
                        {
                                $options['props'][$key]['status'] = '403 Forbidden';
                        } else {
                                $this->properties->put($objDAV, $prop['ns'],$prop['name'],$prop['val']);
                        }
                }

                return "";
        }

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PUT()

ilDAVServer::PUT

(

&

$options

)

PUT method handler.

Parameters

array

parameter passing array

Returns

bool true on success

Definition at line 886 of file class.ilDAVServer.php.

References $ilUser, $options, $out, HTTP_WebDAV_Server\$path, ilChangeEvent\_catchupWriteEvents(), ilChangeEvent\_recordWriteEvent(), davBasename(), davDeslashify(), getObject(), getUploadMaxFilesize(), ilFileUtils\getValidFilename(), ilMimeTypeUtil\lookupMimeType(), and writelog().

        {
                global $ilUser;

                $this->writelog('PUT('.var_export($options, true).')');

                $path = $this->davDeslashify($options['path']);
                $parent = dirname($path);
                $name = $this->davBasename($path);
                
                //Check if FileType is allowed          
                if ($name != ilFileUtils::getValidFilename($name)) {
                        return false;
                }

                // get dav object for path
                $parentDAV =& $this->getObject($parent);

                // sanity check
                if (is_null($parentDAV) || ! $parentDAV->isCollection()) {
                        return '409 Conflict';
                }

        // Prevent putting of files which exceed upload limit
        // FIXME: since this is an optional parameter, we should to do the
        // same check again in function PUTfinished.
                if ($options['content_length'] != null &&
                $options['content_length'] > $this->getUploadMaxFilesize()) {

            $this->writelog('PUT is forbidden, because content length='.
                        $options['content_length'].' is larger than upload_max_filesize='.
                        $this->getUploadMaxFilesize().'in php.ini');

            return '403 Forbidden';
        }
        
                // determine mime type
                include_once("./Services/Utilities/classes/class.ilMimeTypeUtil.php");
                $mime = ilMimeTypeUtil::lookupMimeType($name);

                $objDAV =& $this->getObject($path);
                if (is_null($objDAV))
                {
                        $ttype = $parentDAV->getILIASFileType();
                        $isperm = $parentDAV->isPermitted('create', $ttype);
                        if (! $isperm)
                        {
                $this->writelog('PUT is forbidden, because user has no create permission');

                                return '403 Forbidden';
                        }
                        $options["new"] = true;
                        $objDAV =& $parentDAV->createFile($name);
                        $this->writelog('PUT obj='.$objDAV.' name='.$name.' content_type='.$options['content_type']);
                        //$objDAV->setContentType($options['content_type']);
                        $objDAV->setContentType($mime);
                        if ($options['content_length'] != null)
                        {
                                $objDAV->setContentLength($options['content_length']);
                        }
                        $objDAV->write();
                        // Record write event
                        ilChangeEvent::_recordWriteEvent($objDAV->getObjectId(), $ilUser->getId(), 'create', $parentDAV->getObjectId());
                }
                else if ($objDAV->isNullResource())
                {
                        if (! $parentDAV->isPermitted('create', $parentDAV->getILIASFileType()))
                        {
                $this->writelog('PUT is forbidden, because user has no create permission');
                                return '403 Forbidden';
                        }
                        $options["new"] = false;
                        $objDAV =& $parentDAV->createFileFromNull($name, $objDAV);
                        $this->writelog('PUT obj='.$objDAV.' name='.$name.' content_type='.$options['content_type']);
                        //$objDAV->setContentType($options['content_type']);
                        $objDAV->setContentType($mime);
                        if ($options['content_length'] != null)
                        {
                                $objDAV->setContentLength($options['content_length']);
                        }
                        $objDAV->write();

                        // Record write event
                        ilChangeEvent::_recordWriteEvent($objDAV->getObjectId(), $ilUser->getId(), 'create', $parentDAV->getObjectId());
                }
                else
                {
                        if (! $objDAV->isPermitted('write'))
                        {
                $this->writelog('PUT is forbidden, because user has no write permission');
                                return '403 Forbidden';
                        }
                        $options["new"] = false;
                        $this->writelog('PUT obj='.$objDAV.' name='.$name.' content_type='.$options['content_type'].' content_length='.$options['content_length']);

                        // Create a new version if the previous version is not empty
                        if ($objDAV->getContentLength() != 0) {
                                $objDAV->createNewVersion();
                        }

                        //$objDAV->setContentType($options['content_type']);
                        $objDAV->setContentType($mime);
                        if ($options['content_length'] != null)
                        {
                        $objDAV->setContentLength($options['content_length']);
                        }
                        $objDAV->write();

                        // Record write event
                        ilChangeEvent::_recordWriteEvent($objDAV->getObjectId(), $ilUser->getId(), 'update');
                        ilChangeEvent::_catchupWriteEvents($objDAV->getObjectId(), $ilUser->getId(), 'update');
                }
                // store this object, we reuse it in method PUTfinished
                $this->putObjDAV = $objDAV;

                $out =& $objDAV->getContentOutputStream();
                $this->writelog('PUT outputstream='.$out);

                return $out;
        }

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PUTfinished()

ilDAVServer::PUTfinished

(

&

$options

)

PUTfinished handler.

Parameters

array

parameter passing array

Returns

bool true on success

Definition at line 1013 of file class.ilDAVServer.php.

References $options, $putObjDAV, DELETE(), ilUtil\virusHandling(), and writelog().

        {
                $this->writelog('PUTfinished('.var_export($options, true).')');

                if($this->putObjDAV->getResourceType()==""){
                        $vir = ilUtil::virusHandling($this->putObjDAV->obj->getDirectory($this->putObjDAV->obj->version).'/'.$this->putObjDAV->obj->filename, $this->putObjDAV->obj->filename);
                        if ($vir[0] == false)
                        {
                                $this->writelog('PUTfinished Virus found: '.$vir[1]);
                                //delete file
                                ilDAVServer::DELETE($options);
                                return false;
                        }
                }

                // Update the content length in the file object, if the
                // the client did not specify a content_length
                if ($options['content_length'] == null || $this->putObjDAV->getContentLength() == 0)
                {
                        $objDAV = $this->putObjDAV;
                        if ($objDAV->getContentOutputStreamLength() != null) {
                                $objDAV->setContentLength($objDAV->getContentOutputStreamLength());
                        } else {
                                $objDAV->write();
                                $objDAV->setContentLength(filesize($objDAV->obj->getDirectory($objDAV->obj->version).'/'.$objDAV->obj->filename));
                        }
                        $objDAV->write();
                        $this->putObjDAV = null;
                }
                return true;
        }

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serveRequest()

ilDAVServer::serveRequest

(

)

Serves a WebDAV request.

Definition at line 199 of file class.ilDAVServer.php.

References $_SERVER, HTTP_WebDAV_Server\http_status(), and writelog().

        {
                // die quickly if plugin is deactivated
                if (!self::_isActive())
                {
                        $this->writelog(__METHOD__.' WebDAV disabled. Aborting');
                        $this->http_status('403 Forbidden');
                        echo '<html><body><h1>Sorry</h1>'.
                                '<p><b>Please enable the WebDAV plugin in the ILIAS Administration panel.</b></p>'.
                                '<p>You can only access this page, if WebDAV is enabled on this server.</p>'.
                                '</body></html>';
                        return;
                }

                try {
                        $start = time();
                        $this->writelog('serveRequest():'.$_SERVER['REQUEST_METHOD'].' '.$_SERVER['PATH_INFO'].' ...');
                        parent::serveRequest();
                        $end = time();
                        $this->writelog('serveRequest():'.$_SERVER['REQUEST_METHOD'].' done status='.$this->_http_status.' elapsed='.($end - $start));
                        $this->writelog('---');
                } 
                catch (Exception $e) 
                {
            $this->writelog('serveRequest():'.$_SERVER['REQUEST_METHOD'].' caught exception: '.$e->getMessage().'\n'.$e->getTraceAsString());
                }
        }

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showMountInstructions()

ilDAVServer::showMountInstructions ( &  $objDAV, &  $options  )

private

Mount instructions method handler for directories.

Parameters

ilObjectDAV

dav object handler

Returns

This function does not return. It exits PHP.

Definition at line 631 of file class.ilDAVServer.php.

References $GLOBALS, $ilUser, $lng, $options, HTTP_WebDAV_Server\$path, _getWebfolderInstructionsFor(), davDeslashify(), exit, isFileHidden(), isWebDAVoverHTTPS(), and toObjectPath().

Referenced by GET().

        {
                global $lng,$ilUser;

                $path = $this->davDeslashify($options['path']);

                // The $path variable may contain a full or a shortened DAV path.
                // We convert it into an object path, which we can then use to 
                // construct a new full DAV path.
                $objectPath = $this->toObjectPath($path);

                // Construct a (possibly) full DAV path from the object path.
                $fullPath = '';
                foreach ($objectPath as $object)
                {
                        if ($object->getRefId() == 1 && $this->isFileHidden($object))
                        {
                                // If the repository root object is hidden, we can not
                                // create a full path, because nothing would appear in the
                                // webfolder. We resort to a shortened path instead.
                                $fullPath .= '/ref_1';
                        }
                        else
                        {
                                $fullPath .= '/'.$this->davUrlEncode($object->getResourceName());
                        }
                }

                // Construct a shortened DAV path from the object path.
                $shortenedPath = '/ref_'.
                                $objectPath[count($objectPath) - 1]->getRefId();

                if ($objDAV->isCollection())
                {
                        $shortenedPath .= '/';
                        $fullPath .= '/';
                }

                // Prepend client id to path
                $shortenedPath = '/'.CLIENT_ID.$shortenedPath;
                $fullPath = '/'.CLIENT_ID.$fullPath;

                // Construct webfolder URI's. The URI's are used for mounting the
                // webfolder. Since mounting using URI's is not standardized, we have
                // to create different URI's for different browsers.
                $webfolderURI = $this->base_uri.$shortenedPath;
                $webfolderURI_Konqueror = ($this->isWebDAVoverHTTPS() ? "webdavs" : "webdav").
                                substr($this->base_uri, strrpos($this->base_uri,':')).
                                $shortenedPath;
                                ;
                $webfolderURI_Nautilus = ($this->isWebDAVoverHTTPS() ? "davs" : "dav").
                                substr($this->base_uri, strrpos($this->base_uri,':')).
                                $shortenedPath
                                ;
                $webfolderURI_IE = $this->base_uri.$shortenedPath;

                $webfolderTitle = $objectPath[count($objectPath) - 1]->getResourceName();

                header('Content-Type: text/html; charset=UTF-8');
                echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
                echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN\"\n";
                echo "  \"http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd\">\n";
                echo "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n";
                echo "  <head>\n";
                echo "  <title>".sprintf($lng->txt('webfolder_instructions_titletext'), $webfolderTitle)."</title>\n";
                echo "  </head>\n";
                echo "  <body>\n";

                echo ilDAVServer::_getWebfolderInstructionsFor($webfolderTitle,
                        $webfolderURI, $webfolderURI_IE, $webfolderURI_Konqueror, $webfolderURI_Nautilus,
                        $this->clientOS,$this->clientOSFlavor);

                echo "  </body>\n";
                echo "</html>\n";
                
                // Logout anonymous user to force authentication after calling mount uri
                if($ilUser->getId() == ANONYMOUS_USER_ID)
                {
                        $GLOBALS['ilAuth']->logout();
                        session_destroy();
                }
                
                exit;
        }

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toNodePath()

ilDAVServer::toNodePath

(

$davPath

)

Converts a DAV path into a node path.

The returned array is granted to represent an absolute path.

The first component of a DAV Path is the ILIAS client id. The following component either denote an absolute path, or a relative path starting at a ref_id.

Parameters

String

davPath A DAV path expression.

Returns

Array<String> An Array of path titles.

Definition at line 1697 of file class.ilDAVServer.php.

References $ref_id, and writelog().

Referenced by getObject(), and toObjectPath().

        {
                global $tree;
                $this->writelog('toNodePath('.$davPath.')...');

                // Split the davPath into path titles
                $titlePath = split('/',substr($davPath,1));

                // Remove the client id from the beginning of the title path
                if (count($titlePath) > 0)
                {
                        array_shift($titlePath);
                }

                // If the last path title is empty, remove it
                if (count($titlePath) > 0 && $titlePath[count($titlePath) - 1] == '')
                {
                        array_pop($titlePath);
                }

                // If the path is empty, return null
                if (count($titlePath) == 0)
                {
                        $this->writelog('toNodePath('.$davPath.'):null, because path is empty.');
                        return null;
                }

                // If the path is an absolute path, ref_id is null.
                $ref_id = null;

                // If the path is a relative folder path, convert it into an absolute path
                if (count($titlePath) > 0 && substr($titlePath[0],0,4) == 'ref_')
                {
                        $ref_id = substr($titlePath[0],4);
                        array_shift($titlePath);
                }

                $nodePath = $tree->getNodePathForTitlePath($titlePath, $ref_id);

                $this->writelog('toNodePath():'.var_export($nodePath,true));
                return $nodePath;
        }

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toObjectPath()

ilDAVServer::toObjectPath (   $davPath )

private

Converts a DAV path into an array of DAV objects.

Parameters

String

davPath A DAV path expression.

Returns

array<ilObjectDAV> object or null, if the path does not denote an object.

Definition at line 1661 of file class.ilDAVServer.php.

References ilObjectDAV\createObject(), toNodePath(), and writelog().

Referenced by checkLock(), and showMountInstructions().

        {
                $this->writelog('toObjectPath('.$davPath);
                global $tree;

                $nodePath = $this->toNodePath($davPath);

                if (is_null($nodePath))
                {
                        return null;
                } else {
                        $objectPath = array();
                        foreach ($nodePath as $node)
                        {
                                $pathElement = ilObjectDAV::createObject($node['child'],$node['type']);
                                if (is_null($pathElement))
                                {
                                        break;
                                }
                                $objectPath[] = $pathElement;
                        }
                        return $objectPath;
                }
        }

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UNLOCK()

ilDAVServer::UNLOCK

(

&

$options

)

UNLOCK method handler.

Parameters

array

general parameter passing array

Returns

bool true on success

Definition at line 1489 of file class.ilDAVServer.php.

References $log, $options, HTTP_WebDAV_Server\$path, $success, davDeslashify(), getObject(), and writelog().

        {
                global $log, $ilias;
                $this->writelog('UNLOCK(options='.var_export($options, true).')');
                $this->writelog('UNLOCK '.$options['path']);

                // Check if an object with the path exists.
                $path =& $this->davDeslashify($options['path']);
                $objDAV =& $this->getObject($path);
                if (is_null($objDAV)) {
                        return '404 Not Found';
                }
                if (! $objDAV->isPermitted('write')) {
                        return '403 Forbidden';
                }

                $success = $this->locks->unlockWithoutCheckingDAV(
                        $objDAV,
                        $options['token']
                );

                // Delete null resource object if there are no locks associated to
                // it anymore
                if ($objDAV->isNullResource()
                && count($this->locks->getLocksOnObjectDAV($objDAV)) == 0)
                {
                        $parent = dirname($this->davDeslashify($options['path']));
                        $parentDAV =& $this->getObject($parent);
                        $parentDAV->remove($objDAV);
                }

                // Workaround for Mac OS X: We must return 200 here instead of
                // 204.
                //return ($success) ? '204 No Content' : '412 Precondition Failed';
                return ($success) ? '200 OK' : '412 Precondition Failed';
        }

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writelog()

ilDAVServer::writelog (   $message )

protected

Writes a message to the logfile.,.

Parameters

message

String.

Returns

void.

Definition at line 1775 of file class.ilDAVServer.php.

References $_SERVER, and $ilLog.

Referenced by checkLock(), COPY(), davDeslashify(), DELETE(), fileinfo(), GET(), getLogin(), ilDAVServer(), isFileHidden(), LOCK(), MKCOL(), MOVE(), PROPFIND(), PROPPATCH(), PUT(), PUTfinished(), serveRequest(), toNodePath(), toObjectPath(), and UNLOCK().

        {
                // Only write log message, if we are in debug mode
                if ($this->isDebug)
                {
                        global $ilLog, $ilias;
                        if ($ilLog)
                        {
                                if ($message == '---')
                                {
                                                $ilLog->write('');
                                } else {
                                                $ilLog->write(
                                                                $ilias->account->getLogin()
                                                .' '.$_SERVER['REMOTE_ADDR'].':'.$_SERVER['REMOTE_PORT']
                                                .' ilDAVServer.'.str_replace("\n",";",$message)
                                                        );
                                }
                        }
                        else
                        {
                                $fh = fopen('/opt/ilias/log/ilias.log', 'a');
                                fwrite($fh, date('Y-m-d H:i:s '));
                                fwrite($fh, str_replace("\n",";",$message));
                                fwrite($fh, "\n\n");
                                fclose($fh);
                        }
                }
        }

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Field Documentation

$cachedObjectDAV

ilDAVServer::$cachedObjectDAV

private

Cached object handler.

This is a private variable of function getObject.

Definition at line 63 of file class.ilDAVServer.php.

$clientBrowser

ilDAVServer::$clientBrowser = 'unknown'

private

The name of some well known browsers, that need special support.

This is either "konqueror", or unknown.

Definition at line 89 of file class.ilDAVServer.php.

$clientOS

ilDAVServer::$clientOS = 'unknown'

private

The operating system of the WebDAV client.

This is 'windows', 'unix' or 'unknown'. (Mac OS X considered as 'unix'.).

Definition at line 79 of file class.ilDAVServer.php.

$clientOSFlavor

ilDAVServer::$clientOSFlavor = 'unknown'

private

The flavor of the operating system of the WebDAV client.

This is 'xp', 'osx', or 'unknown'.

Definition at line 84 of file class.ilDAVServer.php.

$instance

ilDAVServer::$instance = null

staticprivate

Definition at line 57 of file class.ilDAVServer.php.

$isDebug

ilDAVServer::$isDebug = false

private

The WebDAVServer prints lots of log messages to the ilias log, if this variable is set to true.

Definition at line 115 of file class.ilDAVServer.php.

$isHTTPS

ilDAVServer::$isHTTPS = null

private

Definition at line 109 of file class.ilDAVServer.php.

Referenced by isWebDAVoverHTTPS().

$locks

ilDAVServer::$locks

private

Handler for locks.

Definition at line 68 of file class.ilDAVServer.php.

Referenced by checkLock(), and fileinfo().

$properties

ilDAVServer::$properties

private

Handler for properties.

Definition at line 72 of file class.ilDAVServer.php.

Referenced by fileinfo().

$putObjDAV

ilDAVServer::$putObjDAV = null

private

Definition at line 101 of file class.ilDAVServer.php.

Referenced by PUTfinished().

---

The documentation for this class was generated from the following file:

• Services/WebDAV/classes/class.ilDAVServer.php