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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.filter;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import org.onap.ccsdk.apps.cadi.Access;
import org.onap.ccsdk.apps.cadi.Access.Level;
import org.onap.ccsdk.apps.cadi.CadiException;
import org.onap.ccsdk.apps.cadi.Symm;
import org.onap.ccsdk.apps.cadi.util.CSV;
import org.onap.ccsdk.apps.cadi.util.CSV.Visitor;
import org.onap.ccsdk.apps.cadi.util.Holder;
/**
* This Filter is designed to help MIGRATE users from systems that don't match the FQI style.
*
* Style 1, where just the ID is translated, i.e. OLD => new@something.onap.org, that is acceptable
* longer term, because it does not store Creds locally. The passwords are in appropriate systems, but
* it's still painful operationally, though it does ease migration.
*
* Style 3, however, which is Direct match of Authorization Header to replacement, is only there
* because some passwords are simply not acceptable for AAF, (too easy, for instance), and it is
* not feasible to break Organization Password rules for a Migration. Therefore, this method
* should not considered something that is in any way a permanent
*
*
* It goes without saying that any file with the password conversion should be protected by "400", etc.
*
* @author Instrumental (Jonathan)
*
*/
public class MapBathConverter {
private static final String BASIC = "Basic ";
private final Map<String,String> map;
/**
* Create with colon separated name value pairs
* Enter the entire "Basic dXNlcjpwYXNz" "Authorization" header, where "dXNlcjpwYXNz" is
* base64 encoded, which can be created with "cadi" tool (in jar)
*
* The replacement should also be an exact replacement of what you want. Recognize that
* this should be TEMPORARY as you are storing credentials outside the users control.
*
* @param value
* @throws IOException
* @throws CadiException
*/
public MapBathConverter(final Access access, final CSV csv) throws IOException, CadiException {
map = new TreeMap<>();
final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
final Date now = new Date();
csv.visit(new Visitor() {
@Override
public void visit(List<String> row) throws CadiException {
if(row.size()<3) {
throw new CadiException("CSV file " + csv + " must have at least 2 Basic Auth columns and an Expiration Date(YYYY-MM-DD) in each row");
}
try {
Date date = sdf.parse(row.get(2));
String oldID = row.get(0);
String newID = row.get(1);
if(date.after(now)) {
if(!oldID.startsWith(BASIC) && newID.startsWith(BASIC)) {
throw new CadiException("CSV file " + csv + ": Uncredentialed ID " + idFromBasic(oldID,null) +
" may not transfer to credentialed ID " + idFromBasic(newID,null));
} else {
map.put(oldID,newID);
access.printf(Level.INIT, "ID Conversion from %s to %s enabled",
idFromBasic(oldID,null),
idFromBasic(newID,null));
}
} else {
access.printf(Level.INIT, "ID Conversion from %s to %s has expired.",
idFromBasic(oldID,null),
idFromBasic(newID,null));
}
} catch (ParseException e) {
throw new CadiException("Cannot Parse Date: " + row.get(2));
} catch (IOException e) {
throw new CadiException(e);
}
}
});
}
private static String idFromBasic(String bath, Holder<String> hpass) throws IOException, CadiException {
if(bath.startsWith(BASIC)) {
String cred = Symm.base64noSplit.decode(bath.substring(6));
int colon = cred.indexOf(':');
if(colon<0) {
throw new CadiException("Invalid Authentication Credential for " + cred);
}
if(hpass!=null) {
hpass.set(cred.substring(colon+1));
}
return cred.substring(0, colon);
} else {
return bath;
}
}
/**
* use to instantiate entries
*
* @return
*/
public Map<String,String> map() {
return map;
}
public String convert(Access access, final String bath) {
String rv = map.get(bath);
String cred;
String tcred=null;
Holder<String> hpass=null;
try {
if(bath.startsWith(BASIC)) {
cred = idFromBasic(bath,(hpass=new Holder<String>(null)));
if(rv==null) {
rv = map.get(cred);
}
} else {
cred = bath;
}
if(rv==null) {
// Nothing here, just return original
rv = bath;
} else {
if(rv.startsWith(BASIC)) {
tcred = idFromBasic(rv,null);
} else {
if(hpass!=null) {
tcred = rv;
rv = BASIC + Symm.base64noSplit.encode(rv+':'+hpass.get());
}
}
if(tcred != null) {
access.printf(Level.AUDIT, "ID %s converted to %s",cred,tcred);
}
}
} catch (IOException | CadiException e) {
access.log(e,"Invalid Authorization");
}
return rv==null?bath:rv;
}
}
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