package org.springframework.security.config.authentication;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.RuntimeBeanReference;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.Elements;
import org.springframework.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;
/**
* Wraps a UserDetailsService bean with a DaoAuthenticationProvider and registers the latter with the
* ProviderManager.
*
* @author Luke Taylor
*/
public class AuthenticationProviderBeanDefinitionParser implements BeanDefinitionParser {
private static final String ATT_USER_DETAILS_REF = "user-service-ref";
public BeanDefinition parse(Element element, ParserContext pc) {
RootBeanDefinition authProvider = new RootBeanDefinition(DaoAuthenticationProvider.class);
authProvider.setSource(pc.extractSource(element));
Element passwordEncoderElt = DomUtils.getChildElementByTagName(element, Elements.PASSWORD_ENCODER);
if (passwordEncoderElt != null) {
PasswordEncoderParser pep = new PasswordEncoderParser(passwordEncoderElt, pc);
authProvider.getPropertyValues().addPropertyValue("passwordEncoder", pep.getPasswordEncoder());
if (pep.getSaltSource() != null) {
authProvider.getPropertyValues().addPropertyValue("saltSource", pep.getSaltSource());
}
}
Element userServiceElt = DomUtils.getChildElementByTagName(element, Elements.USER_SERVICE);
if (userServiceElt == null) {
userServiceElt = DomUtils.getChildElementByTagName(element, Elements.JDBC_USER_SERVICE);
}
if (userServiceElt == null) {
userServiceElt = DomUtils.getChildElementByTagName(element, Elements.LDAP_USER_SERVICE);
}
String ref = element.getAttribute(ATT_USER_DETAILS_REF);
if (StringUtils.hasText(ref)) {
if (userServiceElt != null) {
pc.getReaderContext().error("The " + ATT_USER_DETAILS_REF + " attribute cannot be used in combination with child" +
"elements '" + Elements.USER_SERVICE + "', '" + Elements.JDBC_USER_SERVICE + "' or '" +
Elements.LDAP_USER_SERVICE + "'", element);
}
authProvider.getPropertyValues().add("userDetailsService", new RuntimeBeanReference(ref));
} else {
// Use the child elements to create the UserDetailsService
if (userServiceElt != null) {
pc.getDelegate().parseCustomElement(userServiceElt, authProvider);
} else {
pc.getReaderContext().error("A user-service is required", element);
}
// Pinch the cache-ref from the UserDetailService element, if set.
String cacheRef = userServiceElt.getAttribute(AbstractUserDetailsServiceBeanDefinitionParser.CACHE_REF);
if (StringUtils.hasText(cacheRef)) {
authProvider.getPropertyValues().addPropertyValue("userCache", new RuntimeBeanReference(cacheRef));
}
}
return authProvider;
}
}