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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.io.IOException;
import java.io.PrintStream;
import java.security.Principal;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.TreeMap;
import org.apache.log4j.PropertyConfigurator;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.onap.aaf.cadi.Access.Level;
import org.onap.aaf.cadi.CadiException;
import org.onap.aaf.cadi.LocatorException;
import org.onap.aaf.cadi.Permission;
import org.onap.aaf.cadi.PropAccess;
import org.onap.aaf.cadi.Symm;
import org.onap.aaf.cadi.aaf.v2_0.AAFAuthn;
import org.onap.aaf.cadi.aaf.v2_0.AAFCon;
import org.onap.aaf.cadi.aaf.v2_0.AAFLurPerm;
import org.onap.aaf.cadi.config.Config;
import org.onap.aaf.cadi.filter.MapBathConverter;
import org.onap.aaf.cadi.util.CSV;
import org.onap.aaf.misc.env.APIException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AAFRealm extends AuthorizingRealm {
final static Logger logger = LoggerFactory.getLogger(AAFRealm.class);
public static final String AAF_REALM = "AAFRealm";
private PropAccess access;
private AAFCon<?> acon;
private AAFAuthn<?> authn;
private HashSet<Class<? extends AuthenticationToken>> supports;
private AAFLurPerm authz;
private MapBathConverter mbc;
private Map<String,String> idMap;
/**
*
* There appears to be no configuration objects or references available for CADI to start with.
*
*/
public AAFRealm () {
access = new PropAccess(); // pick up cadi_prop_files from VM_Args
mbc = null;
idMap = null;
String cadi_prop_files = access.getProperty(Config.CADI_PROP_FILES);
if(cadi_prop_files==null) {
String msg = Config.CADI_PROP_FILES + " in VM Args is required to initialize AAFRealm.";
access.log(Level.DEBUG,msg);
throw new RuntimeException(msg);
} else {
try {
String log4jConfigFile = "./etc/org.ops4j.pax.logging.cfg";
PropertyConfigurator.configure(log4jConfigFile);
System.setOut(createLoggingProxy(System.out));
System.setErr(createLoggingProxy(System.err));
} catch(Exception e) {
e.printStackTrace();
}
//System.out.println("Configuration done");
try {
acon = AAFCon.newInstance(access);
authn = acon.newAuthn();
authz = acon.newLur(authn);
final String csv = access.getProperty(Config.CADI_BATH_CONVERT);
if(csv!=null) {
try {
mbc = new MapBathConverter(access, new CSV(csv));
logger.info("MapBathConversion enabled with file "+csv);
idMap = new TreeMap<String,String>();
// Load
for(Entry<String, String> es : mbc.map().entrySet()) {
String oldID = es.getKey();
if(oldID.startsWith("Basic ")) {
oldID = Symm.base64noSplit.decode(oldID.substring(6));
int idx = oldID.indexOf(':');
if(idx>=0) {
oldID = oldID.substring(0, idx);
}
}
String newID = es.getValue();
if(newID.startsWith("Basic ")) {
newID = Symm.base64noSplit.decode(newID.substring(6));
int idx = newID.indexOf(':');
if(idx>=0) {
newID = newID.substring(0, idx);
}
}
idMap.put(oldID,newID);
}
} catch (IOException e) {
// access.log(e);
}
}
} catch (APIException | CadiException | LocatorException e) {
String msg = "Cannot initiate AAFRealm";
access.log(Level.INIT,msg,e.getMessage());
throw new RuntimeException(msg,e);
}
}
supports = new HashSet<Class<? extends AuthenticationToken>>();
supports.add(UsernamePasswordToken.class);
}
public static PrintStream createLoggingProxy(final PrintStream realPrintStream) {
return new PrintStream(realPrintStream) {
public void print(final String string) {
realPrintStream.print(string);
logger.info(string);
}
};
}
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
final UsernamePasswordToken upt = (UsernamePasswordToken)token;
final String user = upt.getUsername();
String authUser = user;
final String password=new String(upt.getPassword());
String authPassword = password;
if(mbc!=null) {
try {
final String oldBath = "Basic " + Symm.base64noSplit.encode(user+':'+password);
String bath = mbc.convert(access, oldBath);
if(bath!=oldBath) {
bath = Symm.base64noSplit.decode(bath.substring(6));
int colon = bath.indexOf(':');
if(colon>=0) {
authUser = bath.substring(0, colon);
authPassword = bath.substring(colon+1);
access.log(Level.DEBUG, authUser,"user authenticated");
access.log(Level.DEBUG, authn.validate(authUser,authPassword));
}
}
} catch (IOException e) {
access.log(e);
}
}
String err;
try {
err = authn.validate(authUser,authPassword);
} catch (IOException e) {
err = "Credential cannot be validated";
access.log(Level.DEBUG, e, err);
}
if(err != null) {
access.log(Level.DEBUG, err, " - Credential cannot be validated");
throw new AuthenticationException(err);
}
return new AAFAuthenticationInfo(
access,
user,
password
);
}
@Override
protected void assertCredentialsMatch(AuthenticationToken atoken, AuthenticationInfo ai)throws AuthenticationException {
if(ai instanceof AAFAuthenticationInfo) {
if(!((AAFAuthenticationInfo)ai).matches(atoken)) {
throw new AuthenticationException("Credentials do not match");
}
} else {
throw new AuthenticationException("AuthenticationInfo is not an AAFAuthenticationInfo");
}
}
@Override
protected AAFAuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
Principal bait = (Principal)principals.getPrimaryPrincipal();
Principal newBait = bait;
if(idMap!=null) {
final String newID = idMap.get(bait.getName());
if(newID!=null) {
newBait = new Principal() {
@Override
public String getName() {
return newID;
}
};
}
}
List<Permission> pond = new ArrayList<>();
authz.fishAll(newBait,pond);
return new AAFAuthorizationInfo(access,bait,pond);
}
@Override
public boolean supports(AuthenticationToken token) {
return supports.contains(token.getClass());
}
@Override
public String getName() {
return AAF_REALM;
}
}
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