Java tutorial
/* ========================================================================== * * Copyright (C) 2004-2005 Pier Fumagalli <http://www.betaversion.org/~pier/> * * All rights reserved. * * ========================================================================== * * * * 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 com.adito.vfs.webdav.methods; import java.io.IOException; import java.io.PrintWriter; import java.util.Iterator; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import com.maverick.util.URLUTF8Encoder; import com.adito.boot.SystemProperties; import com.adito.vfs.VFSLockManager; import com.adito.vfs.VFSResource; import com.adito.vfs.webdav.DAVException; import com.adito.vfs.webdav.DAVMethod; import com.adito.vfs.webdav.DAVRedirection; import com.adito.vfs.webdav.DAVTransaction; import com.adito.vfs.webdav.DAVUtilities; import com.adito.vfs.webdav.LockedException; /** * <p> * <a href="http://www.rfc-editor.org/rfc/rfc2518.txt">WebDAV</a> * <code>PROPFIND</code> metohd implementation. * </p> * * @author <a href="http://www.betaversion.org/~pier/">Pier Fumagalli</a> */ public class PROPFIND implements DAVMethod { private static Log log = LogFactory.getLog(PROPFIND.class); /** * <p> * Create a new {@link PROPFIND} instance. * </p> */ public PROPFIND() { super(); } /** * <p> * Process the <code>PROPFIND</code> method. * </p> */ public void process(DAVTransaction transaction, VFSResource resource) throws LockedException, IOException { if (transaction.isRequiredRootRedirect() || !transaction.isResourcePath(resource.getFullPath())) { throw new DAVRedirection(false, resource); } String handle = VFSLockManager.getNewHandle(); VFSLockManager.getInstance().lock(resource, transaction.getSessionInfo(), false, false, handle); try { /* Check depth */ int depth = transaction.getDepth(); if (depth > 1) throw new DAVException(403, "Invalid depth"); if (SystemProperties.get("adito.disableFolderBrowsing", "true").equals("true") && !resource.isBrowsable()) { transaction.getResponse().sendError(404, "Not Found"); return; } /* What to do on a collection resource */ transaction.setStatus(207); transaction.setContentType("text/xml; charset=\"utf-8\""); PrintWriter out = transaction.write("utf-8"); /* Output the XML declaration and the root document tag */ out.print("<?xml version=\"1.0\" encoding=\"utf-8\"?>"); out.println("<D:multistatus xmlns:D=\"DAV:\">"); /* Process this resource's property (always) */ this.process(transaction, out, resource); /* Process this resource's children (if required) */ if (resource.isCollection() && (depth > 0)) { Iterator children = resource.getChildren(); while (children.hasNext()) { VFSResource child = (VFSResource) children.next(); this.process(transaction, out, child); } } /* Close up the XML Multi-Status response */ out.println("</D:multistatus>"); out.flush(); // Mount may be null at root if (resource.getMount() != null) { resource.getMount().resourceAccessList(resource, transaction, null); } } catch (Exception e) { // Mount may be null at root if (resource.getMount() != null) { resource.getMount().resourceAccessList(resource, transaction, e); } IOException ioe = new IOException(e.getMessage()); ioe.initCause(e); throw ioe; } finally { VFSLockManager.getInstance().unlock(transaction.getSessionInfo(), handle); } } private void process(DAVTransaction txn, PrintWriter out, VFSResource res) throws IOException { out.println(" <D:response>"); if (log.isDebugEnabled()) log.debug("Returning " + res.getFullURI().toString()); /** * LDP - This was using toASCIIString which was causing problems with drive mapping. Changed to use getFullPath seems to * fix this error and non ascii characters are now being shown correctly in drive mapping, network places and web folders. */ out.println(" <D:href>" + (txn.getRequest().isSecure() || SystemProperties.get("jetty.force.HTTPSRedirect", "false").equals("true") ? "https" : "http") + "://" + txn.getRequest().getHeader("Host") // LDP - Why fullpath? this seems to be broken on some stores. Use webfolder path instead + URLUTF8Encoder.encode(res.getWebFolderPath(), false) + "</D:href>"); out.println(" <D:propstat>"); if (res.isNull()) { out.println(" <D:status>HTTP/1.1 404 Not Found</D:status>"); } else { out.println(" <D:prop>"); /* Figure out what we're dealing with here */ if (res.isCollection()) { this.process(out, "resourcetype", "<D:collection/>"); this.process(out, "getcontenttype", GET.COLLECTION_MIME_TYPE); } else { this.process(out, "getcontenttype", res.getContentType()); } this.process(out, "getetag", res.getEntityTag()); String lmod = DAVUtilities.format(res.getLastModified()); this.process(out, "getlastmodified", lmod); String clen = DAVUtilities.format(res.getContentLength()); this.process(out, "getcontentlength", clen); out.println(" </D:prop>"); out.println(" <D:status>HTTP/1.1 200 OK</D:status>"); } out.println(" </D:propstat>"); out.println(" </D:response>"); } private void process(PrintWriter out, String name, String value) { if (value == null) return; out.print(" <D:"); out.print(name); out.print(">"); out.print(value); out.print("</D:"); out.print(name); out.println(">"); } }