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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.shiro;
import java.nio.ByteBuffer;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.PrincipalCollection;
import org.onap.aaf.cadi.Access;
import org.onap.aaf.cadi.Hash;
import org.onap.aaf.cadi.Access.Level;
public class AAFAuthenticationInfo implements AuthenticationInfo {
private static final long serialVersionUID = -1502704556864321020L;
// We assume that Shiro is doing Memory Only, and this salt is not needed cross process
private final static int salt = new SecureRandom().nextInt();
private final AAFPrincipalCollection apc;
private final byte[] hash;
private Access access;
public AAFAuthenticationInfo(Access access, String username, String password) {
this.access = access;
apc = new AAFPrincipalCollection(username);
hash = getSaltedCred(password);
}
@Override
public byte[] getCredentials() {
access.log(Level.DEBUG, "AAFAuthenticationInfo.getCredentials");
return hash;
}
@Override
public PrincipalCollection getPrincipals() {
access.log(Level.DEBUG, "AAFAuthenticationInfo.getPrincipals");
return apc;
}
public boolean matches(AuthenticationToken atoken) {
if(atoken instanceof UsernamePasswordToken) {
UsernamePasswordToken upt = (UsernamePasswordToken)atoken;
if(apc.getPrimaryPrincipal().getName().equals(upt.getPrincipal())) {
byte[] newhash = getSaltedCred(new String(upt.getPassword()));
if(newhash.length==hash.length) {
for(int i=0;i<hash.length;++i) {
if(hash[i]!=newhash[i]) {
return false;
}
}
return true;
}
}
}
return false;
}
private byte[] getSaltedCred(String password) {
byte[] pbytes = password.getBytes();
ByteBuffer bb = ByteBuffer.allocate(pbytes.length+Integer.SIZE/8);
bb.asIntBuffer().put(salt);
bb.put(password.getBytes());
try {
return Hash.hashSHA256(bb.array());
} catch (NoSuchAlgorithmException e) {
return new byte[0]; // should never get here
}
}
}
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