/*
* 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 org.apache.ftpserver.config.spring;
import java.io.File;
import java.util.List;
import java.util.Map;
import org.apache.ftpserver.DefaultConnectionConfig;
import org.apache.ftpserver.FtpServer;
import org.apache.ftpserver.FtpServerConfigurationException;
import org.apache.ftpserver.interfaces.MessageResource;
import org.apache.ftpserver.message.MessageResourceImpl;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.ManagedMap;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;
/**
* Parses the FtpServer "server" element into a Spring
* bean graph
*/
public class ServerBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
/**
* {@inheritDoc}
*/
protected Class<? extends FtpServer> getBeanClass(final Element element) {
return FtpServer.class;
}
/**
* {@inheritDoc}
*/
@Override
protected void doParse(final Element element, final ParserContext parserContext, final BeanDefinitionBuilder builder) {
List<Element> childs = SpringUtil.getChildElements(element);
for(Element childElm : childs) {
String childName = childElm.getLocalName();
if("listeners".equals(childName)) {
Map listeners = parseListeners(childElm, parserContext, builder);
if(listeners.size() > 0) {
builder.addPropertyValue("listeners", listeners);
}
} else if("ftplets".equals(childName)) {
Map ftplets = parseFtplets(childElm, parserContext, builder);
builder.addPropertyValue("ftplets", ftplets);
} else if("file-user-manager".equals(childName) ||
"db-user-manager".equals(childName)) {
Object userManager = parserContext.getDelegate().parseCustomElement(childElm, builder.getBeanDefinition());
builder.addPropertyValue("userManager", userManager);
} else if("user-manager".equals(childName)) {
builder.addPropertyValue("userManager", SpringUtil.parseSpringChildElement(childElm, parserContext, builder));
} else if("native-filesystem".equals(childName)) {
Object fileSystem = parserContext.getDelegate().parseCustomElement(childElm, builder.getBeanDefinition());
builder.addPropertyValue("fileSystem", fileSystem);
} else if("filesystem".equals(childName)) {
builder.addPropertyValue("fileSystem", SpringUtil.parseSpringChildElement(childElm, parserContext, builder));
} else if("commands".equals(childName)) {
Object commandFactory = parserContext.getDelegate().parseCustomElement(childElm, builder.getBeanDefinition());
builder.addPropertyValue("commandFactory", commandFactory);
} else if("messages".equals(childName)) {
MessageResource mr = parseMessageResource(childElm, parserContext, builder);
builder.addPropertyValue("messageResource", mr);
} else {
throw new FtpServerConfigurationException("Unknown configuration name: " + childName);
}
}
// Configure login limits
DefaultConnectionConfig connectionConfig = new DefaultConnectionConfig();
if(StringUtils.hasText(element.getAttribute("max-logins"))) {
connectionConfig.setMaxLogins(SpringUtil.parseInt(element, "max-logins"));
}
if(StringUtils.hasText(element.getAttribute("max-anon-logins"))) {
connectionConfig.setMaxAnonymousLogins(SpringUtil.parseInt(element, "max-anon-logins"));
}
if(StringUtils.hasText(element.getAttribute("anon-enabled"))) {
connectionConfig.setAnonymousLoginEnabled(SpringUtil.parseBoolean(element, "anon-enabled", true));
}
if(StringUtils.hasText(element.getAttribute("max-login-failures"))) {
connectionConfig.setMaxLoginFailures(SpringUtil.parseInt(element, "max-login-failures"));
}
if(StringUtils.hasText(element.getAttribute("login-failure-delay"))) {
connectionConfig.setLoginFailureDelay(SpringUtil.parseInt(element, "login-failure-delay"));
}
builder.addPropertyValue("connectionConfig", connectionConfig);
}
/**
* Parse the "messages" element
*/
private MessageResource parseMessageResource(final Element childElm, final ParserContext parserContext,
final BeanDefinitionBuilder builder) {
MessageResourceImpl mr = new MessageResourceImpl();
if(StringUtils.hasText(childElm.getAttribute("languages"))) {
String langString = childElm.getAttribute("languages");
String[] languages = langString.split("[\\s,]+");
mr.setLanguages(languages);
}
if(StringUtils.hasText(childElm.getAttribute("directory"))) {
mr.setCustomMessageDirectory(new File(childElm.getAttribute("directory")));
}
return mr;
}
/**
* Parse the "ftplets" element
*/
private Map parseFtplets(final Element childElm, final ParserContext parserContext, final BeanDefinitionBuilder builder) {
ManagedMap ftplets = new ManagedMap();
List<Element> childs = SpringUtil.getChildElements(childElm);
for(Element ftpletElm : childs) {
ftplets.put(ftpletElm.getAttribute("name"),
SpringUtil.parseSpringChildElement(ftpletElm, parserContext, builder));
}
return ftplets;
}
/**
* Parse listeners elements
*/
@SuppressWarnings("unchecked")
private Map parseListeners(final Element listenersElm, final ParserContext parserContext, final BeanDefinitionBuilder builder) {
ManagedMap listeners = new ManagedMap();
List<Element> childs = SpringUtil.getChildElements(listenersElm);
for(Element listenerElm : childs) {
Object listener = null;
String ln = listenerElm.getLocalName();
if("nio-listener".equals(ln)) {
listener = parserContext.getDelegate().parseCustomElement(listenerElm, builder.getBeanDefinition());
} else if ("listener".equals(ln)) {
listener = SpringUtil.parseSpringChildElement(listenerElm, parserContext, builder);
} else {
throw new FtpServerConfigurationException("Unknown listener element " + ln);
}
String name = listenerElm.getAttribute("name");
listeners.put(name, listener);
}
return listeners;
}
}