package io.undertow.attribute;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.SSLSessionInfo;
/**
* @author Stuart Douglas
*/
public class SslCipherAttribute implements ExchangeAttribute {
public static final SslCipherAttribute INSTANCE = new SslCipherAttribute();
@Override
public String readAttribute(HttpServerExchange exchange) {
SSLSessionInfo ssl = exchange.getConnection().getSslSessionInfo();
if(ssl == null) {
return null;
}
return ssl.getCipherSuite();
}
@Override
public void writeAttribute(HttpServerExchange exchange, String newValue) throws ReadOnlyAttributeException {
throw new ReadOnlyAttributeException("SSL Cipher", newValue);
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "SSL Cipher";
}
@Override
public ExchangeAttribute build(final String token) {
if (token.equals("%{SSL_CIPHER}")) {
return INSTANCE;
}
return null;
}
}
}