webdavservlet.java

This temp directory is used by the JVM for temporary file storage. The JVM is configured to use thi

        if ((path.toUpperCase().startsWith("/WEB-INF")) ||
            (path.toUpperCase().startsWith("/META-INF"))) {
            resp.sendError(WebdavStatus.SC_FORBIDDEN);
            return;
        }

        // Properties which are to be displayed.
        Vector properties = null;
        // Propfind depth
        int depth = INFINITY;
        // Propfind type
        int type = FIND_ALL_PROP;

        String depthStr = req.getHeader("Depth");

        if (depthStr == null) {
            depth = INFINITY;
        } else {
            if (depthStr.equals("0")) {
                depth = 0;
            } else if (depthStr.equals("1")) {
                depth = 1;
            } else if (depthStr.equals("infinity")) {
                depth = INFINITY;
            }
        }

        Node propNode = null;

        DocumentBuilder documentBuilder = getDocumentBuilder();

        try {
            Document document = documentBuilder.parse
                (new InputSource(req.getInputStream()));

            // Get the root element of the document
            Element rootElement = document.getDocumentElement();
            NodeList childList = rootElement.getChildNodes();

            for (int i=0; i < childList.getLength(); i++) {
                Node currentNode = childList.item(i);
                switch (currentNode.getNodeType()) {
                case Node.TEXT_NODE:
                    break;
                case Node.ELEMENT_NODE:
                    if (currentNode.getNodeName().endsWith("prop")) {
                        type = FIND_BY_PROPERTY;
                        propNode = currentNode;
                    }
                    if (currentNode.getNodeName().endsWith("propname")) {
                        type = FIND_PROPERTY_NAMES;
                    }
                    if (currentNode.getNodeName().endsWith("allprop")) {
                        type = FIND_ALL_PROP;
                    }
                    break;
                }
            }
        } catch(Exception e) {
            // Most likely there was no content : we use the defaults.
            // TODO : Enhance that !
        }

        if (type == FIND_BY_PROPERTY) {
            properties = new Vector();
            NodeList childList = propNode.getChildNodes();

            for (int i=0; i < childList.getLength(); i++) {
                Node currentNode = childList.item(i);
                switch (currentNode.getNodeType()) {
                case Node.TEXT_NODE:
                    break;
                case Node.ELEMENT_NODE:
                    String nodeName = currentNode.getNodeName();
                    String propertyName = null;
                    if (nodeName.indexOf(':') != -1) {
                        propertyName = nodeName.substring
                            (nodeName.indexOf(':') + 1);
                    } else {
                        propertyName = nodeName;
                    }
                    // href is a live property which is handled differently
                    properties.addElement(propertyName);
                    break;
                }
            }

        }

        // Retrieve the resources
        DirContext resources = getResources();

        if (resources == null) {
            resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }

        boolean exists = true;
        Object object = null;
        try {
            object = resources.lookup(path);
        } catch (NamingException e) {
            exists = false;
            int slash = path.lastIndexOf('/');
            if (slash != -1) {
                String parentPath = path.substring(0, slash);
                Vector currentLockNullResources =
                    (Vector) lockNullResources.get(parentPath);
                if (currentLockNullResources != null) {
                    Enumeration lockNullResourcesList =
                        currentLockNullResources.elements();
                    while (lockNullResourcesList.hasMoreElements()) {
                        String lockNullPath = (String)
                            lockNullResourcesList.nextElement();
                        if (lockNullPath.equals(path)) {
                            resp.setStatus(WebdavStatus.SC_MULTI_STATUS);
                            resp.setContentType("text/xml; charset=UTF-8");
                            // Create multistatus object
                            XMLWriter generatedXML = 
                                new XMLWriter(resp.getWriter());
                            generatedXML.writeXMLHeader();
                            generatedXML.writeElement
                                (null, "multistatus"
                                 + generateNamespaceDeclarations(),
                                 XMLWriter.OPENING);
                            parseLockNullProperties
                                (req, generatedXML, lockNullPath, type,
                                 properties);
                            generatedXML.writeElement(null, "multistatus",
                                                      XMLWriter.CLOSING);
                            generatedXML.sendData();
                            return;
                        }
                    }
                }
            }
        }

        if (!exists) {
            resp.sendError(HttpServletResponse.SC_NOT_FOUND, path);
            return;
        }

        resp.setStatus(WebdavStatus.SC_MULTI_STATUS);

        resp.setContentType("text/xml; charset=UTF-8");

        // Create multistatus object
        XMLWriter generatedXML = new XMLWriter(resp.getWriter());
        generatedXML.writeXMLHeader();

        generatedXML.writeElement(null, "multistatus"
                                  + generateNamespaceDeclarations(),
                                  XMLWriter.OPENING);

        if (depth == 0) {
            parseProperties(req, resources, generatedXML, path, type,
                            properties);
        } else {
            // The stack always contains the object of the current level
            Stack stack = new Stack();
            stack.push(path);

            // Stack of the objects one level below
            Stack stackBelow = new Stack();

            while ((!stack.isEmpty()) && (depth >= 0)) {

                String currentPath = (String) stack.pop();
                parseProperties(req, resources, generatedXML, currentPath,
                                type, properties);

                try {
                    object = resources.lookup(currentPath);
                } catch (NamingException e) {
                    continue;
                }

                if ((object instanceof DirContext) && (depth > 0)) {

                    try {
                        NamingEnumeration enum = resources.list(currentPath);
                        while (enum.hasMoreElements()) {
                            NameClassPair ncPair =
                                (NameClassPair) enum.nextElement();
                            String newPath = currentPath;
                            if (!(newPath.endsWith("/")))
                                newPath += "/";
                            newPath += ncPair.getName();
                            stackBelow.push(newPath);
                        }
                    } catch (NamingException e) {
                        resp.sendError
                            (HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                             path);
                        return;
                    }

                    // Displaying the lock-null resources present in that
                    // collection
                    String lockPath = currentPath;
                    if (lockPath.endsWith("/"))
                        lockPath = 
                            lockPath.substring(0, lockPath.length() - 1);
                    Vector currentLockNullResources =
                        (Vector) lockNullResources.get(lockPath);
                    if (currentLockNullResources != null) {
                        Enumeration lockNullResourcesList =
                            currentLockNullResources.elements();
                        while (lockNullResourcesList.hasMoreElements()) {
                            String lockNullPath = (String)
                                lockNullResourcesList.nextElement();
                            parseLockNullProperties
                                (req, generatedXML, lockNullPath, type,
                                 properties);
                        }
                    }

                }

                if (stack.isEmpty()) {
                    depth--;
                    stack = stackBelow;
                    stackBelow = new Stack();
                }

                generatedXML.sendData();

            }
        }

        generatedXML.writeElement(null, "multistatus",
                                  XMLWriter.CLOSING);

        generatedXML.sendData();

    }


    /**
     * PROPPATCH Method.
     */
    protected void doProppatch(HttpServletRequest req,
                               HttpServletResponse resp)
        throws ServletException, IOException {

        if (readOnly) {
            resp.sendError(WebdavStatus.SC_FORBIDDEN);
            return;
        }

        if (isLocked(req)) {
            resp.sendError(WebdavStatus.SC_LOCKED);
            return;
        }

        resp.sendError(HttpServletResponse.SC_NOT_IMPLEMENTED);

    }


    /**
     * MKCOL Method.
     */
    protected void doMkcol(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

        if (readOnly) {
            resp.sendError(WebdavStatus.SC_FORBIDDEN);
            return;
        }

        if (isLocked(req)) {
            resp.sendError(WebdavStatus.SC_LOCKED);
            return;
        }

        String path = getRelativePath(req);

        if ((path.toUpperCase().startsWith("/WEB-INF")) ||
            (path.toUpperCase().startsWith("/META-INF"))) {
            resp.sendError(WebdavStatus.SC_FORBIDDEN);
            return;
        }

        // Retrieve the resources
        DirContext resources = getResources();

        if (resources == null) {
            resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }

        boolean exists = true;
        Object object = null;
        try {
            object = resources.lookup(path);
        } catch (NamingException e) {
            exists = false;
        }

        // Can't create a collection if a resource already exists at the given
        // path
        if (exists) {
            // Get allowed methods
            StringBuffer methodsAllowed = determineMethodsAllowed(resources,
                                                                  req);
            
            resp.addHeader("Allow", methodsAllowed.toString());

            resp.sendError(WebdavStatus.SC_METHOD_NOT_ALLOWED);
            return;
        }

        if (req.getInputStream().available() > 0) {
            DocumentBuilder documentBuilder = getDocumentBuilder();
            try {
                Document document = documentBuilder.parse
                    (new InputSource(req.getInputStream()));
                // TODO : Process this request body    
                resp.sendError(WebdavStatus.SC_NOT_IMPLEMENTED);
                return;

            } catch(SAXException saxe) {
                // Parse error - assume invalid content
                resp.sendError(WebdavStatus.SC_BAD_REQUEST);
                return;
            }
        }

        boolean result = true;
        try {
            resources.createSubcontext(path);
        } catch (NamingException e) {
            result = false;
        }

        if (!result) {
            resp.sendError(WebdavStatus.SC_CONFLICT,
                           WebdavStatus.getStatusText
                           (WebdavStatus.SC_CONFLICT));
        } else {
            resp.setStatus(WebdavStatus.SC_CREATED);
            // Removing any lock-null resource which would be present
            lockNullResources.remove(path);
        }

    }


    /**
     * DELETE Method.
     */
    protected void doDelete(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

        if (readOnly) {
            resp.sendError(WebdavStatus.SC_FORBIDDEN);
            return;
        }

        if (isLocked(req)) {
            resp.sendError(WebdavStatus.SC_LOCKED);
            return;
        }

        deleteResource(req, resp);

    }


    /**
     * Process a POST request for the specified resource.
     *
     * @param request The servlet request we are processing
     * @param response The servlet response we are creating
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet-specified error occurs
     */
    protected void doPut(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

        if (isLocked(req)) {
            resp.sendError(WebdavStatus.SC_LOCKED);
            return;
        }

        super.doPut(req, resp);