mirror of
https://github.com/vanitasvitae/Smack.git
synced 2024-11-19 10:32:05 +01:00
5f9456db0d
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@7074 b35dd754-fafc-0310-a699-88a17e54d16e
259 lines
11 KiB
Java
259 lines
11 KiB
Java
/**
|
|
* $RCSfile$
|
|
* $Revision: $
|
|
* $Date: $
|
|
*
|
|
* Copyright 2003-2005 Jive Software.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
package org.jivesoftware.smack;
|
|
|
|
import javax.net.ssl.X509TrustManager;
|
|
import java.io.FileInputStream;
|
|
import java.io.InputStream;
|
|
import java.io.IOException;
|
|
import java.security.*;
|
|
import java.security.cert.CertificateException;
|
|
import java.security.cert.CertificateParsingException;
|
|
import java.security.cert.X509Certificate;
|
|
import java.util.*;
|
|
import java.util.regex.Matcher;
|
|
import java.util.regex.Pattern;
|
|
|
|
/**
|
|
* Trust manager that checks all certificates presented by the server. This class
|
|
* is used during TLS negotiation. It is possible to disable/enable some or all checkings
|
|
* by configuring the {@link ConnectionConfiguration}. The truststore file that contains
|
|
* knows and trusted CA root certificates can also be configure in {@link ConnectionConfiguration}.
|
|
*
|
|
* @author Gaston Dombiak
|
|
*/
|
|
class ServerTrustManager implements X509TrustManager {
|
|
|
|
private static Pattern cnPattern = Pattern.compile("(?i)(cn=)([^,]*)");
|
|
|
|
private ConnectionConfiguration configuration;
|
|
|
|
/**
|
|
* Holds the domain of the remote server we are trying to connect
|
|
*/
|
|
private String server;
|
|
private KeyStore trustStore;
|
|
|
|
public ServerTrustManager(String server, ConnectionConfiguration configuration) {
|
|
this.configuration = configuration;
|
|
this.server = server;
|
|
|
|
InputStream in = null;
|
|
try {
|
|
trustStore = KeyStore.getInstance(configuration.getTruststoreType());
|
|
in = new FileInputStream(configuration.getTruststorePath());
|
|
trustStore.load(in, configuration.getTruststorePassword().toCharArray());
|
|
}
|
|
catch (Exception e) {
|
|
e.printStackTrace();
|
|
// Disable root CA checking
|
|
configuration.setVerifyRootCAEnabled(false);
|
|
}
|
|
finally {
|
|
if (in != null) {
|
|
try {
|
|
in.close();
|
|
}
|
|
catch (IOException ioe) {
|
|
// Ignore.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public X509Certificate[] getAcceptedIssuers() {
|
|
return new X509Certificate[0];
|
|
}
|
|
|
|
public void checkClientTrusted(X509Certificate[] arg0, String arg1)
|
|
throws CertificateException {
|
|
}
|
|
|
|
public void checkServerTrusted(X509Certificate[] x509Certificates, String arg1)
|
|
throws CertificateException {
|
|
|
|
int nSize = x509Certificates.length;
|
|
|
|
List<String> peerIdentities = getPeerIdentity(x509Certificates[0]);
|
|
|
|
if (configuration.isVerifyChainEnabled()) {
|
|
// Working down the chain, for every certificate in the chain,
|
|
// verify that the subject of the certificate is the issuer of the
|
|
// next certificate in the chain.
|
|
Principal principalLast = null;
|
|
for (int i = nSize -1; i >= 0 ; i--) {
|
|
X509Certificate x509certificate = x509Certificates[i];
|
|
Principal principalIssuer = x509certificate.getIssuerDN();
|
|
Principal principalSubject = x509certificate.getSubjectDN();
|
|
if (principalLast != null) {
|
|
if (principalIssuer.equals(principalLast)) {
|
|
try {
|
|
PublicKey publickey =
|
|
x509Certificates[i + 1].getPublicKey();
|
|
x509Certificates[i].verify(publickey);
|
|
}
|
|
catch (GeneralSecurityException generalsecurityexception) {
|
|
throw new CertificateException(
|
|
"signature verification failed of " + peerIdentities);
|
|
}
|
|
}
|
|
else {
|
|
throw new CertificateException(
|
|
"subject/issuer verification failed of " + peerIdentities);
|
|
}
|
|
}
|
|
principalLast = principalSubject;
|
|
}
|
|
}
|
|
|
|
if (configuration.isVerifyRootCAEnabled()) {
|
|
// Verify that the the last certificate in the chain was issued
|
|
// by a third-party that the client trusts.
|
|
boolean trusted = false;
|
|
try {
|
|
trusted = trustStore.getCertificateAlias(x509Certificates[nSize - 1]) != null;
|
|
if (!trusted && nSize == 1 && configuration.isSelfSignedCertificateEnabled())
|
|
{
|
|
System.out.println("Accepting self-signed certificate of remote server: " +
|
|
peerIdentities);
|
|
trusted = true;
|
|
}
|
|
}
|
|
catch (KeyStoreException e) {
|
|
e.printStackTrace();
|
|
}
|
|
if (!trusted) {
|
|
throw new CertificateException("root certificate not trusted of " + peerIdentities);
|
|
}
|
|
}
|
|
|
|
if (configuration.isNotMatchingDomainCheckEnabled()) {
|
|
// Verify that the first certificate in the chain corresponds to
|
|
// the server we desire to authenticate.
|
|
// Check if the certificate uses a wildcard indicating that subdomains are valid
|
|
if (peerIdentities.size() == 1 && peerIdentities.get(0).startsWith("*.")) {
|
|
// Remove the wildcard
|
|
String peerIdentity = peerIdentities.get(0).replace("*.", "");
|
|
// Check if the requested subdomain matches the certified domain
|
|
if (!server.endsWith(peerIdentity)) {
|
|
throw new CertificateException("target verification failed of " + peerIdentities);
|
|
}
|
|
}
|
|
else if (!peerIdentities.contains(server)) {
|
|
throw new CertificateException("target verification failed of " + peerIdentities);
|
|
}
|
|
}
|
|
|
|
if (configuration.isExpiredCertificatesCheckEnabled()) {
|
|
// For every certificate in the chain, verify that the certificate
|
|
// is valid at the current time.
|
|
Date date = new Date();
|
|
for (int i = 0; i < nSize; i++) {
|
|
try {
|
|
x509Certificates[i].checkValidity(date);
|
|
}
|
|
catch (GeneralSecurityException generalsecurityexception) {
|
|
throw new CertificateException("invalid date of " + server);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Returns the identity of the remote server as defined in the specified certificate. The
|
|
* identity is defined in the subjectDN of the certificate and it can also be defined in
|
|
* the subjectAltName extension of type "xmpp". When the extension is being used then the
|
|
* identity defined in the extension in going to be returned. Otherwise, the value stored in
|
|
* the subjectDN is returned.
|
|
*
|
|
* @param x509Certificate the certificate the holds the identity of the remote server.
|
|
* @return the identity of the remote server as defined in the specified certificate.
|
|
*/
|
|
public static List<String> getPeerIdentity(X509Certificate x509Certificate) {
|
|
// Look the identity in the subjectAltName extension if available
|
|
List<String> names = getSubjectAlternativeNames(x509Certificate);
|
|
if (names.isEmpty()) {
|
|
String name = x509Certificate.getSubjectDN().getName();
|
|
Matcher matcher = cnPattern.matcher(name);
|
|
if (matcher.find()) {
|
|
name = matcher.group(2);
|
|
}
|
|
// Create an array with the unique identity
|
|
names = new ArrayList<String>();
|
|
names.add(name);
|
|
}
|
|
return names;
|
|
}
|
|
|
|
/**
|
|
* Returns the JID representation of an XMPP entity contained as a SubjectAltName extension
|
|
* in the certificate. If none was found then return <tt>null</tt>.
|
|
*
|
|
* @param certificate the certificate presented by the remote entity.
|
|
* @return the JID representation of an XMPP entity contained as a SubjectAltName extension
|
|
* in the certificate. If none was found then return <tt>null</tt>.
|
|
*/
|
|
private static List<String> getSubjectAlternativeNames(X509Certificate certificate) {
|
|
List<String> identities = new ArrayList<String>();
|
|
try {
|
|
Collection<List<?>> altNames = certificate.getSubjectAlternativeNames();
|
|
// Check that the certificate includes the SubjectAltName extension
|
|
if (altNames == null) {
|
|
return Collections.emptyList();
|
|
}
|
|
// Use the type OtherName to search for the certified server name
|
|
/*for (List item : altNames) {
|
|
Integer type = (Integer) item.get(0);
|
|
if (type == 0) {
|
|
// Type OtherName found so return the associated value
|
|
try {
|
|
// Value is encoded using ASN.1 so decode it to get the server's identity
|
|
ASN1InputStream decoder = new ASN1InputStream((byte[]) item.toArray()[1]);
|
|
DEREncodable encoded = decoder.readObject();
|
|
encoded = ((DERSequence) encoded).getObjectAt(1);
|
|
encoded = ((DERTaggedObject) encoded).getObject();
|
|
encoded = ((DERTaggedObject) encoded).getObject();
|
|
String identity = ((DERUTF8String) encoded).getString();
|
|
// Add the decoded server name to the list of identities
|
|
identities.add(identity);
|
|
}
|
|
catch (UnsupportedEncodingException e) {
|
|
// Ignore
|
|
}
|
|
catch (IOException e) {
|
|
// Ignore
|
|
}
|
|
catch (Exception e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
// Other types are not good for XMPP so ignore them
|
|
System.out.println("SubjectAltName of invalid type found: " + certificate);
|
|
}*/
|
|
}
|
|
catch (CertificateParsingException e) {
|
|
e.printStackTrace();
|
|
}
|
|
return identities;
|
|
}
|
|
|
|
}
|