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nl.info.webdav.methods.DoPropfind Maven / Gradle / Ivy
/*
* 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 nl.info.webdav.methods;
import nl.info.webdav.IMimeTyper;
import nl.info.webdav.ITransaction;
import nl.info.webdav.IWebdavStore;
import nl.info.webdav.StoredObject;
import nl.info.webdav.WebdavStatus;
import nl.info.webdav.exceptions.AccessDeniedException;
import nl.info.webdav.exceptions.LockFailedException;
import nl.info.webdav.exceptions.WebdavException;
import nl.info.webdav.fromcatalina.XMLHelper;
import nl.info.webdav.fromcatalina.XMLWriter;
import nl.info.webdav.locking.LockedObject;
import nl.info.webdav.locking.ResourceLocks;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Vector;
import javax.xml.parsers.DocumentBuilder;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
public class DoPropfind extends AbstractMethod {
private static final org.slf4j.Logger LOG = org.slf4j.LoggerFactory.getLogger(DoPropfind.class);
/**
* PROPFIND - Specify a property mask.
*/
private static final int FIND_BY_PROPERTY = 0;
/**
* PROPFIND - Display all properties.
*/
private static final int FIND_ALL_PROP = 1;
/**
* PROPFIND - Return property names.
*/
private static final int FIND_PROPERTY_NAMES = 2;
private final IWebdavStore _store;
private final ResourceLocks _resourceLocks;
private final IMimeTyper _mimeTyper;
private int _depth;
public DoPropfind(IWebdavStore store, ResourceLocks resLocks,
IMimeTyper mimeTyper) {
_store = store;
_resourceLocks = resLocks;
_mimeTyper = mimeTyper;
}
public void execute(ITransaction transaction, HttpServletRequest req,
HttpServletResponse resp) throws IOException, LockFailedException {
LOG.trace("-- " + this.getClass().getName());
// Retrieve the resources
String path = getCleanPath(getRelativePath(req));
String tempLockOwner = "doPropfind" + System.currentTimeMillis() + req;
_depth = getDepth(req);
if (_resourceLocks.lock(transaction, path, tempLockOwner, false,
_depth, TEMP_TIMEOUT, TEMPORARY)) {
StoredObject so;
try {
so = _store.getStoredObject(transaction, path);
if (so == null) {
resp.setContentType("text/xml; charset=UTF-8");
resp.sendError(HttpServletResponse.SC_NOT_FOUND, req
.getRequestURI());
return;
}
Vector properties = null;
path = getCleanPath(getRelativePath(req));
Node propNode = null;
int propertyFindType = FIND_ALL_PROP;
if (req.getContentLength() != 0) {
DocumentBuilder documentBuilder = getDocumentBuilder();
try {
Document document = documentBuilder
.parse(new InputSource(req.getInputStream()));
// Get the root element of the document
Element rootElement = document.getDocumentElement();
propNode = XMLHelper
.findSubElement(rootElement, "prop");
if (propNode != null) {
propertyFindType = FIND_BY_PROPERTY;
} else if (XMLHelper.findSubElement(rootElement,
"propname") != null) {
propertyFindType = FIND_PROPERTY_NAMES;
}
} catch (Exception e) {
resp.sendError(WebdavStatus.SC_INTERNAL_SERVER_ERROR);
return;
}
}
HashMap namespaces = new HashMap();
namespaces.put("DAV:", "D");
if (propertyFindType == FIND_BY_PROPERTY) {
properties = XMLHelper.getPropertiesFromXML(propNode);
}
resp.setStatus(WebdavStatus.SC_MULTI_STATUS);
resp.setContentType("text/xml; charset=UTF-8");
// Create multi status object
XMLWriter generatedXML = new XMLWriter(resp.getWriter(), namespaces);
generatedXML.writeXMLHeader();
generatedXML.writeElement("DAV::multistatus", XMLWriter.OPENING);
if (_depth == 0) {
parseProperties(transaction, req, generatedXML, path,
propertyFindType, properties, _mimeTyper
.getMimeType(transaction, path));
} else {
recursiveParseProperties(transaction, path, req,
generatedXML, propertyFindType, properties, _depth,
_mimeTyper.getMimeType(transaction, path));
}
generatedXML.writeElement("DAV::multistatus", XMLWriter.CLOSING);
generatedXML.sendData();
} catch (AccessDeniedException e) {
resp.sendError(WebdavStatus.SC_FORBIDDEN);
} catch (WebdavException | ServletException e) {
LOG.warn("Sending internal error!");
resp.sendError(WebdavStatus.SC_INTERNAL_SERVER_ERROR);
} finally {
_resourceLocks.unlockTemporaryLockedObjects(transaction, path,
tempLockOwner);
}
} else {
Hashtable errorList = new Hashtable<>();
errorList.put(path, WebdavStatus.SC_LOCKED);
sendReport(req, resp, errorList);
}
}
/**
* goes recursive through all folders. used by propfind
*
* @param currentPath the current path
* @param req HttpServletRequest
* @param generatedXML the generated XML
* @param propertyFindType the property for find type
* @param properties vector of properties
* @param depth depth of the propfind
* @throws WebdavException if an error in the underlying store occurs
*/
private void recursiveParseProperties(ITransaction transaction,
String currentPath, HttpServletRequest req, XMLWriter generatedXML,
int propertyFindType, Vector properties, int depth,
String mimeType) throws WebdavException {
parseProperties(transaction, req, generatedXML, currentPath,
propertyFindType, properties, mimeType);
if (depth > 0) {
// no need to get name if depth is already zero
String[] names = _store.getChildrenNames(transaction, currentPath);
names = names == null ? new String[] {} : names;
String newPath;
for (String name : names) {
newPath = currentPath;
if (!(newPath.endsWith("/"))) {
newPath += "/";
}
newPath += name;
recursiveParseProperties(transaction, newPath, req,
generatedXML, propertyFindType, properties, depth - 1,
mimeType);
}
}
}
/**
* Propfind helper method.
*
* @param req
* The servlet request
* @param generatedXML
* XML response to the Propfind request
* @param path
* Path of the current resource
* @param type
* Propfind type
* @param propertiesVector
* If the propfind type is find properties by name, then this Vector
* contains those properties
*/
private void parseProperties(ITransaction transaction,
HttpServletRequest req, XMLWriter generatedXML, String path,
int type, Vector propertiesVector, String mimeType)
throws WebdavException {
StoredObject so = _store.getStoredObject(transaction, path);
boolean isFolder = so.isFolder();
final String creationdate = creationDateFormat(so.getCreationDate());
final String lastModified = lastModifiedDateFormat(so.getLastModified());
String resourceLength = String.valueOf(so.getResourceLength());
generatedXML.writeElement("DAV::response", XMLWriter.OPENING);
String status = "HTTP/1.1 " + WebdavStatus.SC_OK + " " + WebdavStatus.getStatusText(WebdavStatus.SC_OK);
// Generating href element
generatedXML.writeElement("DAV::href", XMLWriter.OPENING);
String href = req.getContextPath();
String servletPath = req.getServletPath();
if (servletPath != null) {
if ((href.endsWith("/")) && (servletPath.startsWith("/")))
href += servletPath.substring(1);
else
href += servletPath;
}
if ((href.endsWith("/")) && (path.startsWith("/")))
href += path.substring(1);
else
href += path;
if ((isFolder) && (!href.endsWith("/")))
href += "/";
generatedXML.writeText(rewriteUrl(href));
generatedXML.writeElement("DAV::href", XMLWriter.CLOSING);
String resourceName = path;
int lastSlash = path.lastIndexOf('/');
if (lastSlash != -1)
resourceName = resourceName.substring(lastSlash + 1);
switch (type) {
case FIND_ALL_PROP:
generatedXML.writeElement("DAV::propstat", XMLWriter.OPENING);
generatedXML.writeElement("DAV::prop", XMLWriter.OPENING);
generatedXML.writeProperty("DAV::creationdate", creationdate);
generatedXML.writeElement("DAV::displayname", XMLWriter.OPENING);
generatedXML.writeData(resourceName);
generatedXML.writeElement("DAV::displayname", XMLWriter.CLOSING);
if (!isFolder) {
generatedXML
.writeProperty("DAV::getlastmodified", lastModified);
generatedXML.writeProperty("DAV::getcontentlength",
resourceLength);
if (mimeType != null) {
generatedXML.writeProperty("DAV::getcontenttype",
mimeType);
}
generatedXML.writeProperty("DAV::getetag", getETag(so));
generatedXML.writeElement("DAV::resourcetype",
XMLWriter.NO_CONTENT);
} else {
generatedXML.writeElement("DAV::resourcetype", XMLWriter.OPENING);
generatedXML.writeElement("DAV::collection", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::resourcetype", XMLWriter.CLOSING);
}
writeSupportedLockElements(transaction, generatedXML, path);
writeLockDiscoveryElements(transaction, generatedXML, path);
generatedXML.writeProperty("DAV::source", "");
generatedXML.writeElement("DAV::prop", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::status", XMLWriter.OPENING);
generatedXML.writeText(status);
generatedXML.writeElement("DAV::status", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::propstat", XMLWriter.CLOSING);
break;
case FIND_PROPERTY_NAMES:
generatedXML.writeElement("DAV::propstat", XMLWriter.OPENING);
generatedXML.writeElement("DAV::prop", XMLWriter.OPENING);
generatedXML.writeElement("DAV::creationdate", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::displayname", XMLWriter.NO_CONTENT);
if (!isFolder) {
generatedXML.writeElement("DAV::getcontentlanguage", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::getcontentlength", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::getcontenttype", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::getetag", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::getlastmodified", XMLWriter.NO_CONTENT);
}
generatedXML.writeElement("DAV::resourcetype", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::supportedlock", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::source", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::prop", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::status", XMLWriter.OPENING);
generatedXML.writeText(status);
generatedXML.writeElement("DAV::status", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::propstat", XMLWriter.CLOSING);
break;
case FIND_BY_PROPERTY:
Vector propertiesNotFound = new Vector<>();
generatedXML.writeElement("DAV::propstat", XMLWriter.OPENING);
generatedXML.writeElement("DAV::prop", XMLWriter.OPENING);
Enumeration properties = propertiesVector.elements();
while (properties.hasMoreElements()) {
String property = properties.nextElement();
if (property.equals("DAV::creationdate")) {
generatedXML.writeProperty("DAV::creationdate",
creationdate);
} else if (property.equals("DAV::displayname")) {
generatedXML.writeElement("DAV::displayname",
XMLWriter.OPENING);
generatedXML.writeData(resourceName);
generatedXML.writeElement("DAV::displayname",
XMLWriter.CLOSING);
} else if (property.equals("DAV::getcontentlanguage")) {
if (isFolder) {
propertiesNotFound.addElement(property);
} else {
generatedXML.writeElement("DAV::getcontentlanguage",
XMLWriter.NO_CONTENT);
}
} else if (property.equals("DAV::getcontentlength")) {
if (isFolder) {
propertiesNotFound.addElement(property);
} else {
generatedXML.writeProperty("DAV::getcontentlength",
resourceLength);
}
} else if (property.equals("DAV::getcontenttype")) {
if (isFolder) {
propertiesNotFound.addElement(property);
} else {
generatedXML.writeProperty("DAV::getcontenttype",
mimeType);
}
} else if (property.equals("DAV::getetag")) {
if (isFolder || so.isNullResource()) {
propertiesNotFound.addElement(property);
} else {
generatedXML.writeProperty("DAV::getetag", getETag(so));
}
} else if (property.equals("DAV::getlastmodified")) {
if (isFolder) {
propertiesNotFound.addElement(property);
} else {
generatedXML.writeProperty("DAV::getlastmodified",
lastModified);
}
} else if (property.equals("DAV::resourcetype")) {
if (isFolder) {
generatedXML.writeElement("DAV::resourcetype",
XMLWriter.OPENING);
generatedXML.writeElement("DAV::collection",
XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::resourcetype",
XMLWriter.CLOSING);
} else {
generatedXML.writeElement("DAV::resourcetype",
XMLWriter.NO_CONTENT);
}
} else if (property.equals("DAV::source")) {
generatedXML.writeProperty("DAV::source", "");
} else if (property.equals("DAV::supportedlock")) {
writeSupportedLockElements(transaction, generatedXML, path);
} else if (property.equals("DAV::lockdiscovery")) {
writeLockDiscoveryElements(transaction, generatedXML, path);
} else {
propertiesNotFound.addElement(property);
}
}
generatedXML.writeElement("DAV::prop", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::status", XMLWriter.OPENING);
generatedXML.writeText(status);
generatedXML.writeElement("DAV::status", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::propstat", XMLWriter.CLOSING);
Enumeration propertiesNotFoundList = propertiesNotFound
.elements();
if (propertiesNotFoundList.hasMoreElements()) {
status = "HTTP/1.1 " + WebdavStatus.SC_NOT_FOUND
+ " "
+ WebdavStatus.getStatusText(WebdavStatus.SC_NOT_FOUND);
generatedXML.writeElement("DAV::propstat", XMLWriter.OPENING);
generatedXML.writeElement("DAV::prop", XMLWriter.OPENING);
while (propertiesNotFoundList.hasMoreElements()) {
generatedXML.writeElement((String) propertiesNotFoundList
.nextElement(), XMLWriter.NO_CONTENT);
}
generatedXML.writeElement("DAV::prop", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::status", XMLWriter.OPENING);
generatedXML.writeText(status);
generatedXML.writeElement("DAV::status", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::propstat", XMLWriter.CLOSING);
}
break;
}
generatedXML.writeElement("DAV::response", XMLWriter.CLOSING);
}
private void writeSupportedLockElements(
ITransaction transaction,
XMLWriter generatedXML,
String path
) {
LockedObject lo = _resourceLocks.getLockedObjectByPath(transaction, path);
generatedXML.writeElement("DAV::supportedlock", XMLWriter.OPENING);
if (lo == null) {
// both locks (shared/exclusive) can be granted
generatedXML.writeElement("DAV::lockentry", XMLWriter.OPENING);
generatedXML.writeElement("DAV::lockscope", XMLWriter.OPENING);
generatedXML.writeElement("DAV::exclusive", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::lockscope", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::locktype", XMLWriter.OPENING);
generatedXML.writeElement("DAV::write", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::locktype", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::lockentry", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::lockentry", XMLWriter.OPENING);
generatedXML.writeElement("DAV::lockscope", XMLWriter.OPENING);
generatedXML.writeElement("DAV::shared", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::lockscope", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::locktype", XMLWriter.OPENING);
generatedXML.writeElement("DAV::write", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::locktype", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::lockentry", XMLWriter.CLOSING);
} else {
// LockObject exists, checking lock state
// if an exclusive lock exists, no further lock is possible
if (lo.isShared()) {
generatedXML.writeElement("DAV::lockentry", XMLWriter.OPENING);
generatedXML.writeElement("DAV::lockscope", XMLWriter.OPENING);
generatedXML.writeElement("DAV::shared", XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::lockscope", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::locktype", XMLWriter.OPENING);
generatedXML.writeElement("DAV::" + lo.getType(),
XMLWriter.NO_CONTENT);
generatedXML.writeElement("DAV::locktype", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::lockentry", XMLWriter.CLOSING);
}
}
generatedXML.writeElement("DAV::supportedlock", XMLWriter.CLOSING);
}
private void writeLockDiscoveryElements(
ITransaction transaction,
XMLWriter generatedXML,
String path
) {
LockedObject lo = _resourceLocks.getLockedObjectByPath(transaction, path);
if (lo != null && !lo.hasExpired()) {
generatedXML.writeElement("DAV::lockdiscovery", XMLWriter.OPENING);
generatedXML.writeElement("DAV::activelock", XMLWriter.OPENING);
generatedXML.writeElement("DAV::locktype", XMLWriter.OPENING);
generatedXML.writeProperty("DAV::" + lo.getType());
generatedXML.writeElement("DAV::locktype", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::lockscope", XMLWriter.OPENING);
if (lo.isExclusive()) {
generatedXML.writeProperty("DAV::exclusive");
} else {
generatedXML.writeProperty("DAV::shared");
}
generatedXML.writeElement("DAV::lockscope", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::depth", XMLWriter.OPENING);
if (_depth == INFINITY) {
generatedXML.writeText("Infinity");
} else {
generatedXML.writeText(String.valueOf(_depth));
}
generatedXML.writeElement("DAV::depth", XMLWriter.CLOSING);
String[] owners = lo.getOwner();
if (owners != null) {
for (int i = 0; i < owners.length; i++) {
generatedXML.writeElement("DAV::owner", XMLWriter.OPENING);
generatedXML.writeElement("DAV::href", XMLWriter.OPENING);
generatedXML.writeText(owners[i]);
generatedXML.writeElement("DAV::href", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::owner", XMLWriter.CLOSING);
}
} else {
generatedXML.writeElement("DAV::owner", XMLWriter.NO_CONTENT);
}
int timeout = (int) (lo.getTimeoutMillis() / 1000);
String timeoutStr = String.valueOf(timeout);
generatedXML.writeElement("DAV::timeout", XMLWriter.OPENING);
generatedXML.writeText("Second-" + timeoutStr);
generatedXML.writeElement("DAV::timeout", XMLWriter.CLOSING);
String lockToken = lo.getID();
generatedXML.writeElement("DAV::locktoken", XMLWriter.OPENING);
generatedXML.writeElement("DAV::href", XMLWriter.OPENING);
generatedXML.writeText("opaquelocktoken:" + lockToken);
generatedXML.writeElement("DAV::href", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::locktoken", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::activelock", XMLWriter.CLOSING);
generatedXML.writeElement("DAV::lockdiscovery", XMLWriter.CLOSING);
} else {
generatedXML.writeElement("DAV::lockdiscovery",
XMLWriter.NO_CONTENT);
}
}
}
