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Milton Community Edition: Supports DAV level 1 and is available on Apache2 license
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 io.milton.http.json;
import io.milton.common.LogUtils;
import io.milton.event.EventManager;
import io.milton.event.PropPatchEvent;
import io.milton.http.HttpManager;
import io.milton.http.Request.Method;
import io.milton.http.exceptions.BadRequestException;
import io.milton.http.exceptions.ConflictException;
import io.milton.http.exceptions.NotAuthorizedException;
import io.milton.http.webdav.PropFindResponse;
import io.milton.http.webdav.PropFindResponse.NameAndError;
import io.milton.http.webdav.PropPatchParseResult;
import io.milton.http.webdav.PropPatchSetter;
import io.milton.http.webdav.WebDavProtocol;
import io.milton.property.PropertyAuthoriser;
import io.milton.property.PropertyAuthoriser.CheckResult;
import io.milton.resource.Resource;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.xml.namespace.QName;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author brad
*/
public class JsonPropPatchHandler {
private static final Logger log = LoggerFactory.getLogger(JsonPropPatchHandler.class);
private final PropPatchSetter patchSetter;
private final PropertyAuthoriser permissionService;
private final EventManager eventManager;
public JsonPropPatchHandler(PropPatchSetter patchSetter, PropertyAuthoriser permissionService, EventManager eventManager) {
if( patchSetter == null ) {
throw new NullPointerException("patchSetter is null");
}
this.patchSetter = patchSetter;
this.permissionService = permissionService;
this.eventManager = eventManager;
}
public PropFindResponse process(Resource wrappedResource, String encodedUrl, Map params) throws NotAuthorizedException, ConflictException, BadRequestException {
log.trace("process");
Map fields = new HashMap<>();
for (String fieldName : params.keySet()) {
String sFieldValue = params.get(fieldName);
QName qn;
if (fieldName.contains(":")) {
// name is of form uri:local E.g. MyDav:authorName
String[] parts = fieldName.split(":");
String nsUri = parts[0];
String localName = parts[1];
qn = new QName(nsUri, localName);
} else {
// name is simple form E.g. displayname, default nsUri to DAV
qn = new QName(WebDavProtocol.NS_DAV.getPrefix(), fieldName);
}
log.debug("field: " + qn);
fields.put(qn, sFieldValue);
}
PropPatchParseResult parseResult = new PropPatchParseResult(fields, null);
if (log.isTraceEnabled()) {
log.trace("check permissions with: " + permissionService.getClass());
}
Set errorFields = permissionService.checkPermissions(HttpManager.request(), Method.PROPPATCH, PropertyAuthoriser.PropertyPermission.WRITE, fields.keySet(), wrappedResource);
if (errorFields != null && errorFields.size() > 0) {
log.info("authorisation errors: " + errorFields.size() + " from permissionService: " + permissionService.getClass());
if (log.isTraceEnabled()) {
for (CheckResult e : errorFields) {
LogUtils.trace(log, " - field error: ", e.getField(), e.getStatus(), e.getDescription());
}
}
throw new NotAuthorizedException(wrappedResource);
} else {
LogUtils.trace(log, "setting properties with", patchSetter.getClass());
PropFindResponse resp = patchSetter.setProperties(encodedUrl, parseResult, wrappedResource);
if (eventManager != null) {
log.trace("fire event");
eventManager.fireEvent(new PropPatchEvent(wrappedResource, resp));
} else {
log.trace("no event manager");
}
if (resp.getErrorProperties().size() > 0) {
LogUtils.warn(log, "Encountered errors setting fields with patch setter", patchSetter.getClass());
}
if (log.isTraceEnabled()) {
if (resp.getErrorProperties().size() > 0) {
for (List e : resp.getErrorProperties().values()) {
for (NameAndError ne : e) {
LogUtils.trace(log, " - field error setting properties: ", ne.getName(), ne.getError());
}
}
}
}
return resp;
}
}
public PropertyAuthoriser getPermissionService() {
return permissionService;
}
}