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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.basic;
import java.io.IOException;
import java.security.Principal;
import java.util.Map;
import java.util.TreeMap;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.onap.ccsdk.apps.cadi.Access;
import org.onap.ccsdk.apps.cadi.Access.Level;
import org.onap.ccsdk.apps.cadi.BasicCred;
import org.onap.ccsdk.apps.cadi.CachedPrincipal;
import org.onap.ccsdk.apps.cadi.CachedPrincipal.Resp;
import org.onap.ccsdk.apps.cadi.CadiException;
import org.onap.ccsdk.apps.cadi.CredVal;
import org.onap.ccsdk.apps.cadi.CredVal.Type;
import org.onap.ccsdk.apps.cadi.CredValDomain;
import org.onap.ccsdk.apps.cadi.Taf;
import org.onap.ccsdk.apps.cadi.config.Config;
import org.onap.ccsdk.apps.cadi.filter.MapBathConverter;
import org.onap.ccsdk.apps.cadi.principal.BasicPrincipal;
import org.onap.ccsdk.apps.cadi.principal.CachedBasicPrincipal;
import org.onap.ccsdk.apps.cadi.taf.HttpTaf;
import org.onap.ccsdk.apps.cadi.taf.TafResp;
import org.onap.ccsdk.apps.cadi.taf.TafResp.RESP;
import org.onap.ccsdk.apps.cadi.taf.dos.DenialOfServiceTaf;
import org.onap.ccsdk.apps.cadi.util.CSV;
/**
* BasicHttpTaf
*
* This TAF implements the "Basic Auth" protocol.
*
* WARNING! It is true for any implementation of "Basic Auth" that the password is passed unencrypted.
* This is because the expectation, when designed years ago, was that it would only be used in
* conjunction with SSL (https). It is common, however, for users to ignore this on the assumption that
* their internal network is secure, or just ignorance. Therefore, a WARNING will be printed
* when the HTTP Channel is not encrypted (unless explicitly turned off).
*
* @author Jonathan
*
*/
public class BasicHttpTaf implements HttpTaf {
private Access access;
private String realm;
private CredVal rbac;
private Map<String,CredVal> rbacs = new TreeMap<>();
private boolean warn;
private long timeToLive;
private MapBathConverter mapIds;
public BasicHttpTaf(Access access, CredVal rbac, String realm, long timeToLive, boolean turnOnWarning) {
this.access = access;
this.realm = realm;
this.rbac = rbac;
this.warn = turnOnWarning;
this.timeToLive = timeToLive;
String csvFile = access.getProperty(Config.CADI_BATH_CONVERT, null);
if(csvFile==null) {
mapIds=null;
} else {
try {
mapIds = new MapBathConverter(access, new CSV(access,csvFile));
} catch (IOException | CadiException e) {
access.log(e,"Bath Map Conversion is not initialzed (non fatal)");
}
}
}
public void add(final CredValDomain cvd) {
rbacs.put(cvd.domain(), cvd);
}
/**
* Note: BasicHttp works for either Carbon Based (Humans) or Silicon Based (machine) Lifeforms.
* @see Taf
*/
public TafResp validate(Taf.LifeForm reading, HttpServletRequest req, HttpServletResponse resp) {
// See if Request implements BasicCred (aka CadiWrap or other), and if User/Pass has already been set separately
if (req instanceof BasicCred) {
BasicCred bc = (BasicCred)req;
if (bc.getUser()!=null) { // CadiWrap, if set, makes sure User & Password are both valid, or both null
if (DenialOfServiceTaf.isDeniedID(bc.getUser())!=null) {
return DenialOfServiceTaf.respDenyID(access,bc.getUser());
}
CachedBasicPrincipal bp = new CachedBasicPrincipal(this,bc,realm,timeToLive);
// Be able to do Organizational specific lookups by Domain
CredVal cv = rbacs.get(bp.getDomain());
if (cv==null) {
cv = rbac;
}
// ONLY FOR Last Ditch DEBUGGING...
// access.log(Level.WARN,bp.getName() + ":" + new String(bp.getCred()));
if (cv.validate(bp.getName(),Type.PASSWORD,bp.getCred(),req)) {
return new BasicHttpTafResp(access,bp,bp.getName()+" authenticated by password",RESP.IS_AUTHENTICATED,resp,realm,false);
} else {
//TODO may need timed retries in a given time period
return new BasicHttpTafResp(access,bc.getUser(),buildMsg(bp,req,"user/pass combo invalid for ",bc.getUser(),"from",req.getRemoteAddr()),
RESP.TRY_AUTHENTICATING,resp,realm,true);
}
}
}
// Get User/Password from Authorization Header value
String authz = req.getHeader("Authorization");
String target="unknown";
if (authz != null && authz.startsWith("Basic ")) {
if (warn&&!req.isSecure()) {
access.log(Level.WARN,"WARNING! BasicAuth has been used over an insecure channel");
}
if(mapIds != null) {
authz = mapIds.convert(access, authz);
}
try {
CachedBasicPrincipal ba = new CachedBasicPrincipal(this,authz,realm,timeToLive);
target=ba.getName();
if (DenialOfServiceTaf.isDeniedID(ba.getName())!=null) {
return DenialOfServiceTaf.respDenyID(access,ba.getName());
}
final int at = ba.getName().indexOf('@');
CredVal cv = rbacs.get(ba.getName().substring(at+1));
if (cv==null) {
cv = rbac; // default
}
// ONLY FOR Last Ditch DEBUGGING...
// access.log(Level.WARN,ba.getName() + ":" + new String(ba.getCred()));
if (cv.validate(ba.getName(), Type.PASSWORD, ba.getCred(), req)) {
return new BasicHttpTafResp(access,ba, ba.getName()+" authenticated by BasicAuth password",RESP.IS_AUTHENTICATED,resp,realm,false);
} else {
//TODO may need timed retries in a given time period
return new BasicHttpTafResp(access,target,buildMsg(ba,req,"user/pass combo invalid"),
RESP.TRY_AUTHENTICATING,resp,realm,true);
}
} catch (IOException e) {
String msg = buildMsg(null,req,"Failed HTTP Basic Authorization (", e.getMessage(), ')');
access.log(Level.INFO,msg);
return new BasicHttpTafResp(access,target,msg, RESP.TRY_AUTHENTICATING, resp, realm,true);
}
}
return new BasicHttpTafResp(access,target,"Requesting HTTP Basic Authorization",RESP.TRY_AUTHENTICATING,resp,realm,false);
}
protected String buildMsg(Principal pr, HttpServletRequest req, Object ... msg) {
StringBuilder sb = new StringBuilder();
if (pr!=null) {
sb.append("user=");
sb.append(pr.getName());
sb.append(',');
}
sb.append("ip=");
sb.append(req.getRemoteAddr());
sb.append(",port=");
sb.append(req.getRemotePort());
if (msg.length>0) {
sb.append(",msg=\"");
for (Object s : msg) {
sb.append(s.toString());
}
sb.append('"');
}
return sb.toString();
}
public void addCredVal(final String realm, final CredVal cv) {
rbacs.put(realm, cv);
}
public CredVal getCredVal(String key) {
CredVal cv = rbacs.get(key);
if (cv==null) {
cv = rbac;
}
return cv;
}
@Override
public Resp revalidate(CachedPrincipal prin, Object state) {
if (prin instanceof BasicPrincipal) {
BasicPrincipal ba = (BasicPrincipal)prin;
if (DenialOfServiceTaf.isDeniedID(ba.getName())!=null) {
return Resp.UNVALIDATED;
}
return rbac.validate(ba.getName(), Type.PASSWORD, ba.getCred(), state)?Resp.REVALIDATED:Resp.UNVALIDATED;
}
return Resp.NOT_MINE;
}
public String toString() {
return "Basic Auth enabled on realm: " + realm;
}
}
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