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/**
* ============LICENSE_START====================================================
* org.onap.aaf
* ===========================================================================
* Copyright (c) 2018 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.aaf.cadi.aaf.v2_0;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import org.onap.aaf.cadi.AbsUserCache;
import org.onap.aaf.cadi.Access;
import org.onap.aaf.cadi.CachedPrincipal;
import org.onap.aaf.cadi.CadiException;
import org.onap.aaf.cadi.User;
import org.onap.aaf.cadi.aaf.AAFPermission;
import org.onap.aaf.cadi.client.Future;
import org.onap.aaf.cadi.client.Rcli;
import org.onap.aaf.cadi.locator.SingleEndpointLocator;
import org.onap.aaf.cadi.lur.ConfigPrincipal;
import aaf.v2_0.CredRequest;
public class AAFAuthn<CLIENT> extends AbsUserCache<AAFPermission> {
private AAFCon<CLIENT> con;
private String realm;
/**
* Configure with Standard AAF properties, Stand alone
* @param con
* @throws Exception ..
*/
// Package on purpose
AAFAuthn(AAFCon<CLIENT> con) {
super(con.access,con.cleanInterval,con.highCount,con.usageRefreshTriggerCount);
this.con = con;
}
/**
* Configure with Standard AAF properties, but share the Cache (with AAF Lur)
* @param con
* @throws Exception
*/
// Package on purpose
AAFAuthn(AAFCon<CLIENT> con, AbsUserCache<AAFPermission> cache) {
super(cache);
this.con = con;
}
/**
* Return Native Realm of AAF Instance.
*
* @return
*/
public String getRealm() {
return realm;
}
/**
* Returns null if ok, or an Error String;
*
* Convenience function. Passes "null" for State object
*/
public String validate(String user, String password) throws IOException {
return validate(user,password,null);
}
/**
* Returns null if ok, or an Error String;
*
* For State Object, you may put in HTTPServletRequest or AuthzTrans, if available. Otherwise,
* leave null
*
* @param user
* @param password
* @return
* @throws IOException
* @throws CadiException
* @throws Exception
*/
public String validate(String user, String password, Object state) throws IOException {
password = access.decrypt(password, false);
byte[] bytes = password.getBytes();
User<AAFPermission> usr = getUser(user,bytes);
if (usr != null && !usr.permExpired()) {
if (usr.principal==null) {
return "User already denied";
} else {
return null; // good
}
}
AAFCachedPrincipal cp = new AAFCachedPrincipal(user, bytes, con.userExpires);
// Since I've relocated the Validation piece in the Principal, just revalidate, then do Switch
// Statement
switch(cp.revalidate(state)) {
case REVALIDATED:
if (usr!=null) {
usr.principal = cp;
} else {
addUser(new User<AAFPermission>(cp,con.userExpires));
}
return null;
case INACCESSIBLE:
return "AAF Inaccessible";
case UNVALIDATED:
addUser(new User<AAFPermission>(user,bytes,con.userExpires));
return "user/pass combo invalid for " + user;
case DENIED:
return "AAF denies API for " + user;
default:
return "AAFAuthn doesn't handle Principal " + user;
}
}
private class AAFCachedPrincipal extends ConfigPrincipal implements CachedPrincipal {
private long expires;
private long timeToLive;
private AAFCachedPrincipal(String name, byte[] pass, int timeToLive) {
super(name,pass);
this.timeToLive = timeToLive;
expires = timeToLive + System.currentTimeMillis();
}
public Resp revalidate(Object state) {
int maxRetries = 15;
try { // these SHOULD be an AAFConHttp and a AAFLocator or SingleEndpointLocator objects, but put in a try to be safe
AAFConHttp forceCastCon = (AAFConHttp) con;
if (forceCastCon.hman().loc instanceof SingleEndpointLocator) {
maxRetries = 1; // we cannot retry the single LGW gateway!
} else {
AAFLocator forceCastLoc = (AAFLocator) forceCastCon.hman().loc;
maxRetries = forceCastLoc.maxIters();
}
} catch (Exception e) {
access.log(Access.Level.DEBUG, e);
}
List<URI> attemptedUris = new ArrayList<>();
URI thisUri = null;
for (int retries = 0;; retries++) {
try {
Miss missed = missed(getName(), getCred());
if (missed == null || missed.mayContinue()) {
CredRequest cr = new CredRequest();
cr.setId(getName());
cr.setPassword(new String(getCred()));
Rcli<CLIENT> client = con.clientIgnoreAlreadyAttempted(attemptedUris);
thisUri = client.getURI();
Future<String> fp = client.readPost("/authn/validate", con.credReqDF, cr);
//Rcli<CLIENT> client = con.client().forUser(con.basicAuth(getName(), new String(getCred())));
//Future<String> fp = client.read(
// "/authn/basicAuth",
// "text/plain"
// );
if (fp.get(con.timeout)) {
expires = System.currentTimeMillis() + timeToLive;
addUser(new User<AAFPermission>(this, timeToLive));
return Resp.REVALIDATED;
} else {
addMiss(getName(), getCred());
return Resp.UNVALIDATED;
}
} else {
return Resp.UNVALIDATED;
}
} catch (Exception e) {
if (thisUri != null) {
attemptedUris.add(thisUri);
}
con.access.log(e);
if (retries > maxRetries) {
return Resp.INACCESSIBLE;
}
}
}
}
public long expires() {
return expires;
}
}
}
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