content: /*
   * Copyright 1999,2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package net.sf.webdav.methods;
  
  import java.io.IOException;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import net.sf.webdav.StoredObject;
  import net.sf.webdav.ITransaction;
  import net.sf.webdav.WebdavStatus;
  import net.sf.webdav.IWebdavStore;
  import net.sf.webdav.exceptions.AccessDeniedException;
  import net.sf.webdav.exceptions.LockFailedException;
  import net.sf.webdav.exceptions.WebdavException;
  import net.sf.webdav.locking.ResourceLocks;
  
  public class DoOptions extends DeterminableMethod {
  
      private static org.slf4j.Logger LOG = org.slf4j.LoggerFactory
              .getLogger(DoOptions.class);
  
      private IWebdavStore _store;
      private ResourceLocks _resourceLocks;
  
      public DoOptions(IWebdavStore store, ResourceLocks resLocks) {
          _store = store;
          _resourceLocks = resLocks;
      }
  
      public void execute(ITransaction transaction, HttpServletRequest req,
              HttpServletResponse resp) throws IOException, LockFailedException {
  
          LOG.trace("-- " + this.getClass().getName());
  
          String tempLockOwner = "doOptions" + System.currentTimeMillis()
                  + req.toString();
          String path = getRelativePath(req);
          if (_resourceLocks.lock(transaction, path, tempLockOwner, false, 0,
                  TEMP_TIMEOUT, TEMPORARY)) {
              StoredObject so = null;
              try {
                  resp.addHeader("DAV", "1, 2");
  
                  so = _store.getStoredObject(transaction, path);
                  String methodsAllowed = determineMethodsAllowed(so);
                  resp.addHeader("Allow", methodsAllowed);
                  resp.addHeader("MS-Author-Via", "DAV");
              } catch (AccessDeniedException e) {
                  resp.sendError(WebdavStatus.SC_FORBIDDEN);
              } catch (WebdavException e) {
                  resp.sendError(WebdavStatus.SC_INTERNAL_SERVER_ERROR);
              } finally {
                  _resourceLocks.unlockTemporaryLockedObjects(transaction, path,
                          tempLockOwner);
              }
          } else {
              resp.sendError(WebdavStatus.SC_INTERNAL_SERVER_ERROR);
          }
      }
  }
  