Package org.apache.catalina.servlets

# Class WebdavServlet

java.lang.Object
javax.servlet.GenericServlet
javax.servlet.http.HttpServlet
org.apache.catalina.servlets.DefaultServlet
org.apache.catalina.servlets.WebdavServlet

All Implemented Interfaces:
  `Serializable`, `Servlet`, `ServletConfig`

public class WebdavServlet extends DefaultServlet
Servlet which adds support for WebDAV level 2. All the basic HTTP requests are handled by the DefaultServlet. The WebDAVServlet must not be used as the default servlet (ie mapped to '/') as it will not work in this configuration.

Mapping a subpath (e.g. `/webdav/*` to this servlet has the effect of re-mounting the entire web application under that sub-path, with WebDAV access to all the resources. The `WEB-INF` and `META-INF` directories are protected in this re-mounted resource tree.

To enable WebDAV for a context add the following to web.xml:

     <servlet>
      <servlet-name>webdav</servlet-name>
      <servlet-class>org.apache.catalina.servlets.WebdavServlet</servlet-class>
        <init-param>
          <param-name>debug</param-name>
          <param-value>0</param-value>
        </init-param>
        <init-param>
          <param-name>listings</param-name>
          <param-value>false</param-value>
        </init-param>
      </servlet>
      <servlet-mapping>
        <servlet-name>webdav</servlet-name>
        <url-pattern>/*</url-pattern>
      </servlet-mapping>

This will enable read only access. To enable read-write access add:

      <init-param>
        <param-name>readonly</param-name>
        <param-value>false</param-value>
      </init-param>

To make the content editable via a different URL, use the following mapping:

      <servlet-mapping>
        <servlet-name>webdav</servlet-name>
        <url-pattern>/webdavedit/*</url-pattern>
      </servlet-mapping>

By default access to /WEB-INF and META-INF are not available via WebDAV. To enable access to these URLs, use add:

      <init-param>
        <param-name>allowSpecialPaths</param-name>
        <param-value>true</param-value>
      </init-param>

Don't forget to secure access appropriately to the editing URLs, especially if allowSpecialPaths is used. With the mapping configuration above, the context will be accessible to normal users as before. Those users with the necessary access will be able to edit content available via http://host:port/context/content using http://host:port/context/webdavedit/content

Author:
  Remy Maucherat
See Also:
  - RFC 4918
  - Serialized Form

- ## Nested Class Summary

  ## Nested classes/interfaces inherited from class org.apache.catalina.servlets.DefaultServlet

  `DefaultServlet.CompressionFormat, DefaultServlet.Range`

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected static final ConcurrentDateFormat`
  `creationDateFormat`
  Simple date format for the creation date ISO representation (partial).
  `protected static final String`
  `DEFAULT_NAMESPACE`
  Default namespace.

  ### Fields inherited from class org.apache.catalina.servlets.DefaultServlet

  `BUFFER_SIZE, compressionFormats, contextXsltFile, debug, fileEncoding, FULL, globalXsltFile, input, listings, localXsltFile, mimeSeparation, output, readmeFile, readOnly, resources, RESOURCES_JNDI_NAME, sendfileSize, showServerInfo, sm, sortListings, sortManager, useAcceptRanges`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `WebdavServlet()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `protected boolean`
  `checkIfHeaders(HttpServletRequest request, HttpServletResponse response, WebResource resource)`
  Check if the conditions specified in the optional If headers are satisfied.
  `protected String`
  `determineMethodsAllowed(HttpServletRequest req)`
  Determines the methods normally allowed for the resource.
  `protected void`
  `doCopy(HttpServletRequest req, HttpServletResponse resp)`
  COPY Method.
  `protected void`
  `doDelete(HttpServletRequest req, HttpServletResponse resp)`
  DELETE Method.
  `protected void`
  `doLock(HttpServletRequest req, HttpServletResponse resp)`
  LOCK Method.
  `protected void`
  `doMkcol(HttpServletRequest req, HttpServletResponse resp)`
  MKCOL Method.
  `protected void`
  `doMove(HttpServletRequest req, HttpServletResponse resp)`
  MOVE Method.
  `protected void`
  `doOptions(HttpServletRequest req, HttpServletResponse resp)`
  OPTIONS Method.
  `protected void`
  `doPropfind(HttpServletRequest req, HttpServletResponse resp)`
  PROPFIND Method.
  `protected void`
  `doProppatch(HttpServletRequest req, HttpServletResponse resp)`
  PROPPATCH Method.
  `protected void`
  `doPut(HttpServletRequest req, HttpServletResponse resp)`
  Process a PUT request for the specified resource.
  `protected void`
  `doUnlock(HttpServletRequest req, HttpServletResponse resp)`
  UNLOCK Method.
  `protected DocumentBuilder`
  `getDocumentBuilder()`
  Return JAXP document builder instance.
  `protected String`
  `getPathPrefix(HttpServletRequest request)`
  Determines the prefix for standard directory GET listings.
  `protected String`
  `getRelativePath(HttpServletRequest request)`
  Override the DefaultServlet implementation and only use the PathInfo.
  `protected String`
  `getRelativePath(HttpServletRequest request, boolean allowEmptyPath)`
  `void`
  `init()`
  Initialize this servlet.
  `protected void`
  `service(HttpServletRequest req, HttpServletResponse resp)`
  Handles the special WebDAV methods.

  ### Methods inherited from class org.apache.catalina.servlets.DefaultServlet

  `checkIfMatch, checkIfModifiedSince, checkIfNoneMatch, checkIfUnmodifiedSince, checkSendfile, copy, copy, copy, copy, copy, copy, copyRange, copyRange, copyRange, destroy, doGet, doHead, doPost, executePartialPut, findXsltSource, generateETag, getReadme, getReadme, parseContentRange, parseRange, render, render, render, renderHtml, renderHtml, renderHtml, renderSize, renderXml, renderXml, renderXml, rewriteUrl, sendNotAllowed, serveResource`

  ### Methods inherited from class javax.servlet.http.HttpServlet

  `doTrace, getLastModified, service`

  ### Methods inherited from class javax.servlet.GenericServlet

  `getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### DEFAULT_NAMESPACE

    protected static final String DEFAULT_NAMESPACE
    Default namespace.
    See Also:
      - Constant Field Values

  - ### creationDateFormat

    protected static final ConcurrentDateFormat creationDateFormat
    Simple date format for the creation date ISO representation (partial).

- ## Constructor Details

  - ### WebdavServlet

    public WebdavServlet()

- ## Method Details

  - ### init

    public void init() throws ServletException
    Initialize this servlet.
    Overrides:
      `init` in class `DefaultServlet`
    Throws:
      `ServletException` - if an exception occurs that interrupts the servlet's normal operation

  - ### getDocumentBuilder

    protected DocumentBuilder getDocumentBuilder() throws ServletException
    Return JAXP document builder instance.
    Returns:
      the document builder
    Throws:
      `ServletException` - document builder creation failed (wrapped `ParserConfigurationException` exception)

  - ### service

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    Handles the special WebDAV methods.
    Overrides:
      `service` in class `DefaultServlet`
    Parameters:
      `req` - the `HttpServletRequest` object that contains the request the client made of the servlet
      `resp` - the `HttpServletResponse` object that contains the response the servlet returns to the client
    Throws:
      `ServletException` - if the HTTP request cannot be handled
      `IOException` - if an input or output error occurs while the servlet is handling the HTTP request
    See Also:
      - `Servlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)`

  - ### checkIfHeaders

    protected boolean checkIfHeaders(HttpServletRequest request, HttpServletResponse response, WebResource resource) throws IOException
    Description copied from class: `DefaultServlet`
    Check if the conditions specified in the optional If headers are satisfied.
    Overrides:
      `checkIfHeaders` in class `DefaultServlet`
    Parameters:
      `request` - The servlet request we are processing
      `response` - The servlet response we are creating
      `resource` - The resource
    Returns:
      `true` if the resource meets all the specified conditions, and `false` if any of the conditions is not satisfied, in which case request processing is stopped
    Throws:
      `IOException` - an IO error occurred

  - ### getRelativePath

    protected String getRelativePath(HttpServletRequest request)
    Override the DefaultServlet implementation and only use the PathInfo. If the ServletPath is non-null, it will be because the WebDAV servlet has been mapped to a url other than /* to configure editing at different url than normal viewing.
    Overrides:
      `getRelativePath` in class `DefaultServlet`
    Parameters:
      `request` - The servlet request we are processing
    Returns:
      the relative path

  - ### getRelativePath

    protected String getRelativePath(HttpServletRequest request, boolean allowEmptyPath)
    Overrides:
      `getRelativePath` in class `DefaultServlet`

  - ### getPathPrefix

    protected String getPathPrefix(HttpServletRequest request)
    Determines the prefix for standard directory GET listings.
    Overrides:
      `getPathPrefix` in class `DefaultServlet`
    Parameters:
      `request` - the request to determine the path for
    Returns:
      the prefix to apply to all resources in the listing.

  - ### doOptions

    protected void doOptions(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    OPTIONS Method.
    Overrides:
      `doOptions` in class `DefaultServlet`
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `ServletException` - If an error occurs
      `IOException` - If an IO error occurs

  - ### doPropfind

    protected void doPropfind(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    PROPFIND Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `ServletException` - If an error occurs
      `IOException` - If an IO error occurs

  - ### doProppatch

    protected void doProppatch(HttpServletRequest req, HttpServletResponse resp) throws IOException
    PROPPATCH Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `IOException` - If an IO error occurs

  - ### doMkcol

    protected void doMkcol(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    MKCOL Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `ServletException` - If an error occurs
      `IOException` - If an IO error occurs

  - ### doDelete

    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    DELETE Method.
    Overrides:
      `doDelete` in class `DefaultServlet`
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `ServletException` - If an error occurs
      `IOException` - If an IO error occurs

  - ### doPut

    protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    Process a PUT request for the specified resource.
    Overrides:
      `doPut` in class `DefaultServlet`
    Parameters:
      `req` - The servlet request we are processing
      `resp` - The servlet response we are creating
    Throws:
      `IOException` - if an input/output error occurs
      `ServletException` - if a servlet-specified error occurs

  - ### doCopy

    protected void doCopy(HttpServletRequest req, HttpServletResponse resp) throws IOException
    COPY Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `IOException` - If an IO error occurs

  - ### doMove

    protected void doMove(HttpServletRequest req, HttpServletResponse resp) throws IOException
    MOVE Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `IOException` - If an IO error occurs

  - ### doLock

    protected void doLock(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    LOCK Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `ServletException` - If an error occurs
      `IOException` - If an IO error occurs

  - ### doUnlock

    protected void doUnlock(HttpServletRequest req, HttpServletResponse resp) throws IOException
    UNLOCK Method.
    Parameters:
      `req` - The Servlet request
      `resp` - The Servlet response
    Throws:
      `IOException` - If an IO error occurs

  - ### determineMethodsAllowed

    protected String determineMethodsAllowed(HttpServletRequest req)
    Determines the methods normally allowed for the resource.
    Overrides:
      `determineMethodsAllowed` in class `DefaultServlet`
    Parameters:
      `req` - The Servlet request
    Returns:
      The allowed HTTP methods