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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.lur;
import java.io.IOException;
import java.security.Principal;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import org.onap.ccsdk.apps.cadi.AbsUserCache;
import org.onap.ccsdk.apps.cadi.Access;
import org.onap.ccsdk.apps.cadi.CredVal;
import org.onap.ccsdk.apps.cadi.Hash;
import org.onap.ccsdk.apps.cadi.Lur;
import org.onap.ccsdk.apps.cadi.Permission;
import org.onap.ccsdk.apps.cadi.User;
import org.onap.ccsdk.apps.cadi.Access.Level;
import org.onap.ccsdk.apps.cadi.config.Config;
/**
* An in-memory Lur that can be configured locally with User info via properties, similar to Tomcat-users.xml mechanisms.
*
* @author Jonathan
*
*/
public final class LocalLur extends AbsUserCache<LocalPermission> implements Lur, CredVal {
public static final String SEMI = "\\s*;\\s*";
public static final String COLON = "\\s*:\\s*";
public static final String COMMA = "\\s*,\\s*";
public static final String PERCENT = "\\s*%\\s*";
// Use to quickly determine whether any given group is supported by this LUR
private final Set<String> supportingGroups;
private String supportedRealm;
/**
* Construct by building structure, see "build"
*
* Reconstruct with "build"
*
* @param userProperties
* @param groupProperties
* @param decryptor
* @throws IOException
*/
public LocalLur(Access access, String userProperties, String groupProperties) throws IOException {
super(access, 0, 0, Integer.MAX_VALUE); // data doesn't expire
supportedRealm = access.getProperty(Config.BASIC_REALM, "localized");
supportingGroups = new TreeSet<>();
if (userProperties != null) {
parseUserProperties(userProperties);
}
if (groupProperties != null) {
parseGroupProperties(groupProperties);
}
}
public boolean validate(String user, CredVal.Type type, byte[] cred, Object state) {
if (cred == null) {
return false;
}
User<LocalPermission> usr = getUser(user, cred);
if (usr == null) {
return false;
}
// covers null as well as bad pass
if ((type == Type.PASSWORD) && (usr.principal instanceof ConfigPrincipal)) {;
return Hash.isEqual(cred, ((ConfigPrincipal)usr.principal).getCred());
}
return false;
}
// @Override
public boolean fish(Principal bait, Permission ... pond) {
if (pond == null) {
return false;
}
for (Permission p : pond) {
if (handles(bait) && p instanceof LocalPermission) { // local Users only have LocalPermissions
User<LocalPermission> user = getUser(bait);
if (user != null) {
return user.contains((LocalPermission)p);
}
}
}
return false;
}
// We do not want to expose the actual Group, so make a copy.
public void fishAll(Principal bait, List<Permission> perms) {
if (handles(bait)) {
User<LocalPermission> user = getUser(bait);
if (user != null) {
user.copyPermsTo(perms);
}
}
}
/* (non-Javadoc)
* @see org.onap.ccsdk.apps.cadi.Lur#handles(java.security.Principal)
*/
@Override
public boolean handles(Principal principal) {
if (principal == null) {
return false;
}
return principal.getName().endsWith(supportedRealm);
}
@Override
public boolean handlesExclusively(Permission ... pond) {
boolean rv = false;
for (Permission p : pond) {
if (rv=supportingGroups.contains(p.getKey())) {
break;
}
}
return rv;
}
/* (non-Javadoc)
* @see org.onap.ccsdk.apps.cadi.Lur#createPerm(java.lang.String)
*/
@Override
public Permission createPerm(String p) {
return new LocalPermission(p);
}
private void parseUserProperties(String userProperties) throws IOException {
// For each User name...
for (String userProperty : userProperties.trim().split(SEMI)) {
String[] userInfo = userProperty.split(COLON, 2);
String[] userPass = userInfo[0].split(PERCENT, 2);
String userName = userPass[0];
byte[] password = null;
if (userPass.length > 1) {
password = access.decrypt(userPass[1], true).getBytes();
if (userName.indexOf('@') < 0) {
userName += '@' + access.getProperty(Config.AAF_DEFAULT_REALM, Config.getDefaultRealm());
}
}
User<LocalPermission> usr;
usr = new User<>(new ConfigPrincipal(userName, password));
addUser(usr);
access.log(Level.INIT, "Local User:", usr.principal);
if (userInfo.length > 1) {
Map<String, Permission> newMap = usr.newMap();
for (String group : userInfo[1].split(COMMA)) {
supportingGroups.add(group);
usr.add(newMap, new LocalPermission(group));
}
usr.setMap(newMap);
}
}
}
private void parseGroupProperties(String groupProperties) throws IOException {
// For each Group name...
for (String group : groupProperties.trim().split(SEMI)) {
String[] groups = group.split(COLON, 2);
if (groups.length <= 1) {
continue;
}
supportingGroups.add(groups[0]);
LocalPermission p = new LocalPermission(groups[0]);
// Add all users (known by comma separators)
for (String groupMember : groups[1].split(COMMA)) {
// look for password, if so, put in passMap
String[] userPass = groupMember.split(PERCENT, 2);
String userName = userPass[0];
if (userName.indexOf('@') < 0) {
userName += '@' + access.getProperty(Config.AAF_DEFAULT_REALM, Config.getDefaultRealm());
}
User<LocalPermission> usr = null;
byte[] password = null;
if (userPass.length > 1) {
password = access.decrypt(userPass[1], true).getBytes();
}
usr = getUser(userName, password);
if (usr == null) {
usr = new User<>(new ConfigPrincipal(userName, password));
addUser(usr);
}
else {
usr.principal = new ConfigPrincipal(userName, password);
}
usr.add(p);
access.log(Level.INIT, "Local User:", usr.principal);
}
}
}
}
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