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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aai
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * Copyright © 2017 Amdocs
* * ===========================================================================
* * 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====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package com.att.authz.cm.ca;
import java.io.File;
import java.io.IOException;
import java.net.Authenticator;
import java.net.MalformedURLException;
import java.net.PasswordAuthentication;
import java.net.URL;
import java.security.cert.CertStore;
import java.security.cert.CertStoreException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.pkcs.PKCS10CertificationRequest;
import org.jscep.client.Client;
import org.jscep.client.ClientException;
import org.jscep.client.EnrollmentResponse;
import org.jscep.client.verification.CertificateVerifier;
import org.jscep.transaction.TransactionException;
import com.att.authz.cm.cert.BCFactory;
import com.att.authz.cm.cert.CSRMeta;
import com.att.authz.cm.cert.StandardFields;
import com.att.authz.common.Define;
import com.att.cadi.cm.CertException;
import com.att.cadi.cm.Factory;
import com.att.cadi.config.Config;
import com.att.cadi.routing.GreatCircle;
import com.att.inno.env.Env;
import com.att.inno.env.TimeTaken;
import com.att.inno.env.Trans;
import com.att.inno.env.util.Split;
public class AppCA extends CA {
public static final String CA_PERM_TYPE = Define.ROOT_NS+".ca"; // Permission Type for validation
private static final String AAF_DATA_DIR = "aaf_data_dir";
private static final String CA_PREFIX = "http://";
private static final String CA_POSTFIX="/certsrv/mscep_admin/mscep.dll";
private final static String MS_PROFILE="1";
private static final String CM_TRUST_CAS = "cm_trust_cas";
private Clients clients;
private static class AAFStdFields implements StandardFields {
private final String env;
public AAFStdFields(Trans trans) throws CertException {
env = trans.getProperty(Config.AAF_ENV);
if(env==null) {
throw new CertException(Config.AAF_ENV + " must be set to create Certificates");
}
}
@Override
public void set(CSRMeta csr) {
// Environment
csr.environment(env);
// Standard Fields
csr.o("ATT Services,Inc.");
csr.l("St Louis");
csr.st("Missouri");
csr.c("US");
}
}
public AppCA(final Trans trans, final String name, final String urlstr, final String id, final String pw) throws IOException, CertificateException, CertException {
super(name,new AAFStdFields(trans), CA_PERM_TYPE);
clients = new Clients(trans,urlstr);
// Set this for NTLM password Microsoft
Authenticator.setDefault(new Authenticator() {
public PasswordAuthentication getPasswordAuthentication () {
return new PasswordAuthentication (
id,
trans.decryptor().decrypt(pw).toCharArray());
}
});
try {
StringBuilder sb = new StringBuilder("CA Reported Trusted Certificates");
List<X509Certificate> trustCerts = new ArrayList<X509Certificate>();
for(Client client : clients) {
CertStore cs = client.getCaCertificate(MS_PROFILE);
Collection<? extends Certificate> cc = cs.getCertificates(null);
for(Certificate c : cc) {
X509Certificate xc = (X509Certificate)c;
// Avoid duplicate Certificates from multiple servers
X509Certificate match = null;
for(X509Certificate t : trustCerts) {
if(t.getSerialNumber().equals(xc.getSerialNumber())) {
match = xc;
break;
}
}
if(match==null && xc.getSubjectDN().getName().startsWith("CN=ATT ")) {
sb.append("\n\t");
sb.append(xc.getSubjectDN());
sb.append("\n\t\tSerial Number: ");
String bi = xc.getSerialNumber().toString(16);
for(int i=0;i<bi.length();++i) {
if(i>1 && i%2==0) {
sb.append(':');
}
sb.append(bi.charAt(i));
}
sb.append("\n\t\tIssuer: ");
sb.append(xc.getIssuerDN());
sb.append("\n\t\tNot Before: ");
sb.append(xc.getNotBefore());
sb.append("\n\t\tNot After: ");
sb.append(xc.getNotAfter());
sb.append("\n\t\tSigAlgorithm: ");
sb.append(xc.getSigAlgName());
sb.append("\n\t\tType: ");
sb.append(xc.getType());
sb.append("\n\t\tVersion: ");
sb.append(xc.getVersion());
trustCerts.add(xc);
}
}
}
trans.init().log(sb);
// Add Additional ones from Property
String data_dir = trans.getProperty(AAF_DATA_DIR);
if(data_dir!=null) {
File data = new File(data_dir);
if(data.exists()) {
String trust_cas = trans.getProperty(CM_TRUST_CAS);
byte[] bytes;
if(trust_cas!=null) {
for(String fname : Split.split(';', trust_cas)) {
File crt = new File(data,fname);
if(crt.exists()) {
bytes = Factory.decode(crt);
try {
Collection<? extends Certificate> cc = Factory.toX509Certificate(bytes);
for(Certificate c : cc) {
trustCerts.add((X509Certificate)c);
}
} catch (CertificateException e) {
throw new CertException(e);
}
}
}
}
}
}
String[] trustChain = new String[trustCerts.size()];
int i=-1;
for( Certificate cert : trustCerts) {
trustChain[++i]=BCFactory.toString(trans,cert);
}
setTrustChain(trustChain);
} catch (ClientException | CertStoreException e) {
// Note: Cannot validly start without all Clients, because we need to read all Issuing Certificates
// This is acceptable risk for most things, as we're not real time in general
throw new CertException(e);
}
}
@Override
public X509Certificate sign(Trans trans, CSRMeta csrmeta) throws IOException, CertException {
TimeTaken tt = trans.start("Generating CSR and Keys for New Certificate", Env.SUB);
PKCS10CertificationRequest csr;
try {
csr = csrmeta.generateCSR(trans);
if(trans.info().isLoggable()) {
trans.info().log(BCFactory.toString(trans, csr));
}
if(trans.info().isLoggable()) {
trans.info().log(csr);
}
} finally {
tt.done();
}
tt = trans.start("Enroll CSR", Env.SUB);
Client client = null;
try {
client = clients.best();
EnrollmentResponse er = client.enrol(
csrmeta.initialConversationCert(trans),
csrmeta.keypair(trans).getPrivate(),
csr,
MS_PROFILE /* profile... MS can't deal with blanks*/);
while(true) {
if(er.isSuccess()) {
for( Certificate cert : er.getCertStore().getCertificates(null)) {
return (X509Certificate)cert;
}
break;
} else if (er.isPending()) {
trans.checkpoint("Polling, waiting on CA to complete");
Thread.sleep(3000);
} else if (er.isFailure()) {
throw new CertException(er.getFailInfo().toString());
}
}
} catch (ClientException e) {
trans.error().log(e,"SCEP Client Error, Temporarily Invalidating Client");
if(client!=null) {
clients.invalidate(client);
}
} catch (InterruptedException|TransactionException|CertificateException|OperatorCreationException | CertStoreException e) {
trans.error().log(e);
} finally {
tt.done();
}
return null;
}
private class Clients implements Iterable<Client>{
/**
* CSO Servers are in Dallas and St Louis
* GEO_LOCATION LATITUDE LONGITUDE ZIPCODE TIMEZONE
* ------------ -------- --------- ------- --------
* DLLSTXCF 32.779295 -96.800014 75202 America/Chicago
* STLSMORC 38.627345 -90.193774 63101 America/Chicago
*
* The online production issuing CA servers are:
* AAF - CADI Issuing CA 01 135.41.45.152 MOSTLS1AAFXXA02
* AAF - CADI Issuing CA 02 135.31.72.154 TXDLLS2AAFXXA02
*/
private final Client[] client;
private final Date[] failure;
private int preferred;
public Clients(Trans trans, String urlstr) throws MalformedURLException {
String[] urlstrs = Split.split(',', urlstr);
client = new Client[urlstrs.length];
failure = new Date[urlstrs.length];
double distance = Double.MAX_VALUE;
String localLat = trans.getProperty("AFT_LATITUDE","39.833333"); //Note: Defaulting to GEO center of US
String localLong = trans.getProperty("AFT_LONGITUDE","-98.583333");
for(int i=0;i<urlstrs.length;++i) {
String[] info = Split.split('/', urlstrs[i]);
if(info.length<3) {
throw new MalformedURLException("Configuration needs LAT and LONG, i.e. ip:port/lat/long");
}
client[i] = new Client(new URL(CA_PREFIX + info[0] + CA_POSTFIX),
new CertificateVerifier() {
@Override
public boolean verify(X509Certificate cert) {
return true;
}
}
);
double d = GreatCircle.calc(info[1],info[2],localLat,localLong);
if(d<distance) {
preferred = i;
distance=d;
}
}
trans.init().printf("Preferred Certificate Authority is %s",urlstrs[preferred]);
for(int i=0;i<urlstrs.length;++i) {
if(i!=preferred) {
trans.init().printf("Alternate Certificate Authority is %s",urlstrs[i]);
}
}
}
private Client best() throws ClientException {
if(failure[preferred]==null) {
return client[preferred];
} else {
Client c=null;
// See if Alternate available
for(int i=0;i<failure.length;++i) {
if(failure[i]==null) {
c=client[i];
}
}
// If not, see if any expirations can be cleared
Date now = new Date();
for(int i=0;i<failure.length;++i) {
if(now.after(failure[i])) {
failure[i]=null;
if(c==null) {
c=client[i];
}
}
}
// if still nothing found, then throw.
if(c==null) {
throw new ClientException("No available machines to call");
}
return c;
}
}
public void invalidate(Client clt) {
for(int i=0;i<client.length;++i) {
if(client[i].equals(clt)) {
failure[i]=new Date(System.currentTimeMillis()+180000 /* 3 mins */);
}
}
}
@Override
public Iterator<Client> iterator() {
return new Iterator<Client>() {
private int iter = 0;
@Override
public boolean hasNext() {
return iter < Clients.this.client.length;
}
@Override
public Client next() {
return Clients.this.client[iter++];
}
};
}
}
}
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