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 java.util.Hashtable;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import net.sf.webdav.ITransaction;
  import net.sf.webdav.IWebdavStore;
  import net.sf.webdav.StoredObject;
  import net.sf.webdav.WebdavStatus;
  import net.sf.webdav.exceptions.AccessDeniedException;
  import net.sf.webdav.exceptions.LockFailedException;
  import net.sf.webdav.exceptions.WebdavException;
  import net.sf.webdav.locking.IResourceLocks;
  import net.sf.webdav.locking.LockedObject;
  
  public class DoMkcol extends AbstractMethod {
  
      private static org.slf4j.Logger LOG = org.slf4j.LoggerFactory
              .getLogger(DoMkcol.class);
  
      private IWebdavStore _store;
      private IResourceLocks _resourceLocks;
      private boolean _readOnly;
  
      public DoMkcol(IWebdavStore store, IResourceLocks resourceLocks,
              boolean readOnly) {
          _store = store;
          _resourceLocks = resourceLocks;
          _readOnly = readOnly;
      }
  
      public void execute(ITransaction transaction, HttpServletRequest req,
              HttpServletResponse resp) throws IOException, LockFailedException {
          LOG.trace("-- " + this.getClass().getName());
  
          if (!_readOnly) {
              String path = getRelativePath(req);
              String parentPath = getParentPath(getCleanPath(path));
  
              Hashtable<String, Integer> errorList = new Hashtable<String, Integer>();
  
              if (!checkLocks(transaction, req, resp, _resourceLocks, parentPath)) {
                  // TODO remove
                  LOG
                          .trace("MkCol on locked resource (parentPath) not executable!"
                                  + "\n Sending SC_FORBIDDEN (403) error response!");
  
                  resp.sendError(WebdavStatus.SC_FORBIDDEN);
                  return;
              }
  
              String tempLockOwner = "doMkcol" + System.currentTimeMillis()
                      + req.toString();
  
              if (_resourceLocks.lock(transaction, path, tempLockOwner, false, 0,
                      TEMP_TIMEOUT, TEMPORARY)) {
                  StoredObject parentSo, so = null;
                  try {
                      parentSo = _store.getStoredObject(transaction, parentPath);
  					if (parentSo == null) {
  						// parent not exists
  						resp.sendError(WebdavStatus.SC_CONFLICT);
  						return;
  					}
  					if (parentPath != null && parentSo.isFolder()) {
                          so = _store.getStoredObject(transaction, path);
                          if (so == null) {
                              _store.createFolder(transaction, path);
                              resp.setStatus(WebdavStatus.SC_CREATED);
                          } else {
                              // object already exists
                              if (so.isNullResource()) {
  
                                  LockedObject nullResourceLo = _resourceLocks
                                          .getLockedObjectByPath(transaction,
                                                  path);
                                  if (nullResourceLo == null) {
                                      resp
                                              .sendError(WebdavStatus.SC_INTERNAL_SERVER_ERROR);
                                      return;
                                  }
                                  String nullResourceLockToken = nullResourceLo
                                          .getID();
                                  String[] lockTokens = getLockIdFromIfHeader(req);
                                  String lockToken = null;
                                  if (lockTokens != null)
                                      lockToken = lockTokens[0];
                                  else {
                                      resp.sendError(WebdavStatus.SC_BAD_REQUEST);
                                      return;
                                  }
                                  if (lockToken.equals(nullResourceLockToken)) {
                                      so.setNullResource(false);
                                      so.setFolder(true);
  
                                      String[] nullResourceLockOwners = nullResourceLo
                                              .getOwner();
                                      String owner = null;
                                      if (nullResourceLockOwners != null)
                                          owner = nullResourceLockOwners[0];
  
                                      if (_resourceLocks.unlock(transaction,
                                              lockToken, owner)) {
                                          resp.setStatus(WebdavStatus.SC_CREATED);
                                      } else {
                                          resp
                                                  .sendError(WebdavStatus.SC_INTERNAL_SERVER_ERROR);
                                      }
  
                                  } else {
                                      // TODO remove
                                      LOG
                                              .trace("MkCol on lock-null-resource with wrong lock-token!"
                                                      + "\n Sending multistatus error report!");
  
                                      errorList.put(path, WebdavStatus.SC_LOCKED);
                                      sendReport(req, resp, errorList);
                                  }
  
                              } else {
                                  String methodsAllowed = DeterminableMethod
                                          .determineMethodsAllowed(so);
                                  resp.addHeader("Allow", methodsAllowed);
                                  resp
                                          .sendError(WebdavStatus.SC_METHOD_NOT_ALLOWED);
                              }
                          }
  
  					} else if (parentPath != null && parentSo.isResource()) {
                          // TODO remove
                          LOG
                                  .trace("MkCol on resource is not executable"
                                          + "\n Sending SC_METHOD_NOT_ALLOWED (405) error response!");
  
                          String methodsAllowed = DeterminableMethod
                                  .determineMethodsAllowed(parentSo);
                          resp.addHeader("Allow", methodsAllowed);
                          resp.sendError(WebdavStatus.SC_METHOD_NOT_ALLOWED);
  
                      } else {
                          resp.sendError(WebdavStatus.SC_FORBIDDEN);
                      }
                  } 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);
              }
  
          } else {
              resp.sendError(WebdavStatus.SC_FORBIDDEN);
          }
      }
  
  }
  