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/**
* ============LICENSE_START====================================================
* org.onap.ccsdk
* ===========================================================================
* Copyright (c) 2023 AT&T Intellectual Property. All rights reserved.
* ===========================================================================
* 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.
* ============LICENSE_END====================================================
*
*/
package org.onap.ccsdk.apps.cadi.taf;
import org.onap.ccsdk.apps.cadi.CadiException;
import org.onap.ccsdk.apps.cadi.Taf;
/**
* EpiTAF
*
* Short for "Epic TAF". Be able to run through a series of TAFs to obtain the validation needed.
*
* OK, the name could probably be better as "Tafs", like it was originally, but the pun was too
* irresistible for this author to pass up.
*
* @author Jonathan
*
*/
public class EpiTaf implements Taf {
private Taf[] tafs;
/**
* EpiTaf constructor
*
* Construct the EpiTaf from variable TAF parameters
* @param tafs
* @throws CadiException
*/
public EpiTaf(Taf ... tafs) throws CadiException{
this.tafs = tafs;
if (tafs.length==0) throw new CadiException("Need at least one Taf implementation in constructor");
}
/**
* validate
*
* Respond with the first TAF to authenticate user based on variable info and "LifeForm" (is it
* a human behind an interface, or a server behind a protocol).
*
* If there is no TAF that can authenticate, respond with the first TAF that suggests it can
* establish an Authentication conversation (TRY_AUTHENTICATING).
*
* If no TAF declares either, respond with NullTafResp (which denies all questions)
*/
public TafResp validate(LifeForm reading, String... info) {
TafResp tresp,firstTryAuth=null;
for (Taf taf : tafs) {
tresp = taf.validate(reading, info);
switch(tresp.isAuthenticated()) {
case TRY_ANOTHER_TAF:
break;
case TRY_AUTHENTICATING:
if (firstTryAuth==null)firstTryAuth=tresp;
break;
default:
return tresp;
}
}
// No TAFs configured, at this point. It is safer at this point to be "not validated",
// rather than "let it go"
return firstTryAuth == null?NullTafResp.singleton():firstTryAuth;
}
}
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