org.wildfly.security.auth.realm.ldap.X509EvidenceVerifier Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including
all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and
Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2016 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.security.auth.realm.ldap;
import org.wildfly.common.iteration.ByteIterator;
import org.wildfly.security.auth.server.RealmUnavailableException;
import org.wildfly.security.auth.SupportLevel;
import org.wildfly.security.evidence.Evidence;
import org.wildfly.security.evidence.X509PeerCertificateChainEvidence;
import org.wildfly.security.util.LdapUtil;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.security.auth.x500.X500Principal;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.function.Supplier;
/**
* An {@link EvidenceVerifier} that verifies a {@link org.wildfly.security.evidence.X509PeerCertificateChainEvidence}.
*
* @author Jan Kalina
*/
class X509EvidenceVerifier implements EvidenceVerifier {
private final List certificateVerifiers;
X509EvidenceVerifier(final List certificateVerifiers) {
this.certificateVerifiers = certificateVerifiers;
}
/**
* Object allowing to verify X509 certificate against information from LDAP
*/
interface CertificateVerifier {
/**
* Construct set of LDAP attributes, which should be loaded to be able to {@link #verifyCertificate}.
* @param requiredAttributes output set of attribute names
*/
default void addRequiredLdapAttributes(Collection requiredAttributes) {}
/**
* Construct set of LDAP attributes, which should be loaded as binary data.
* @param binaryAttributes output set of attribute names
*/
default void addBinaryLdapAttributes(Collection binaryAttributes) {}
/**
* Verify X509 certificate of user using identity information from LDAP
* @param certificate X509 certificate to verify
* @param attributes LDAP attributes values of given identity
* @return if certificate was accepted by this verifier
* @throws NamingException when problem with LDAP
*/
boolean verifyCertificate(X509Certificate certificate, Attributes attributes) throws NamingException, RealmUnavailableException;
}
static class SerialNumberCertificateVerifier implements CertificateVerifier {
final String ldapAttribute;
SerialNumberCertificateVerifier(String ldapAttribute) {
this.ldapAttribute = ldapAttribute;
}
@Override
public void addRequiredLdapAttributes(Collection requiredAttributes) {
requiredAttributes.add(ldapAttribute);
}
@Override
public boolean verifyCertificate(X509Certificate certificate, Attributes attributes) throws NamingException {
Attribute attribute = attributes.get(ldapAttribute);
if (attribute == null) return false;
final int size = attribute.size();
for (int i = 0; i < size; i++) {
Object attrSerialNumber = attribute.get(i);
if (attrSerialNumber != null){
BigInteger value = new BigInteger((String) attrSerialNumber);
if (certificate.getSerialNumber().equals(value)) {
return true;
}
}
}
return false;
}
}
static class SubjectDnCertificateVerifier implements CertificateVerifier {
final String ldapAttribute;
SubjectDnCertificateVerifier(String ldapAttribute) {
this.ldapAttribute = ldapAttribute;
}
@Override
public void addRequiredLdapAttributes(Collection requiredAttributes) {
requiredAttributes.add(ldapAttribute);
}
@Override
public boolean verifyCertificate(X509Certificate certificate, Attributes attributes) throws NamingException {
Attribute attribute = attributes.get(ldapAttribute);
if (attribute == null) return false;
final int size = attribute.size();
for (int i = 0; i < size; i++) {
Object attrSubject = attribute.get(i);
if (attrSubject != null){
X500Principal certSubjectX500Principal = certificate.getSubjectX500Principal();
X500Principal attSubjectX500Principal = new X500Principal((String) attrSubject);
if ( certSubjectX500Principal.equals(attSubjectX500Principal) ) {
return true;
}
}
}
return false;
}
}
static class DigestCertificateVerifier implements CertificateVerifier {
final String ldapAttribute;
final String algorithm;
DigestCertificateVerifier(String ldapAttribute, String algorithm) {
this.ldapAttribute = ldapAttribute;
this.algorithm = algorithm;
}
@Override
public void addRequiredLdapAttributes(Collection requiredAttributes) {
requiredAttributes.add(ldapAttribute);
}
@Override
public boolean verifyCertificate(X509Certificate certificate, Attributes attributes) throws NamingException, RealmUnavailableException {
Attribute attribute = attributes.get(ldapAttribute);
if (attribute == null) return false;
final int size = attribute.size();
try {
MessageDigest md = MessageDigest.getInstance(algorithm);
String digest = ByteIterator.ofBytes(md.digest(certificate.getEncoded())).hexEncode(true).drainToString();
for (int i = 0; i < size; i++) {
Object attrDigest = attribute.get(i);
if (attrDigest != null){
if (digest.equalsIgnoreCase((String) attrDigest)) {
return true;
}
}
}
} catch (NoSuchAlgorithmException | CertificateEncodingException e) {
throw new RealmUnavailableException(e);
}
return false;
}
}
static class EncodedCertificateVerifier implements CertificateVerifier {
final String ldapAttribute;
EncodedCertificateVerifier(String ldapAttribute) {
this.ldapAttribute = ldapAttribute;
}
@Override
public void addRequiredLdapAttributes(Collection requiredAttributes) {
requiredAttributes.add(ldapAttribute);
}
@Override
public void addBinaryLdapAttributes(Collection binaryAttributes) {
binaryAttributes.add(ldapAttribute);
}
@Override
public boolean verifyCertificate(X509Certificate certificate, Attributes attributes) throws NamingException, RealmUnavailableException {
Attribute attribute = LdapUtil.getBinaryAttribute(attributes, ldapAttribute);
if (attribute == null) return false;
final int size = attribute.size();
try {
for (int i = 0; i < size; i++) {
Object attrCertificate = attribute.get(i);
if (attrCertificate != null){
if (Arrays.equals(certificate.getEncoded(), (byte[]) attrCertificate)) {
return true;
}
}
}
} catch (CertificateEncodingException e) {
throw new RealmUnavailableException(e);
}
return false;
}
}
@Override
public SupportLevel getEvidenceVerifySupport(Class evidenceType, String algorithmName) throws RealmUnavailableException {
return evidenceType == X509PeerCertificateChainEvidence.class ? SupportLevel.POSSIBLY_SUPPORTED : SupportLevel.UNSUPPORTED;
}
@Override
public IdentityEvidenceVerifier forIdentity(final DirContext dirContext, final String distinguishedName, final String url, Attributes attributes) throws RealmUnavailableException {
return new IdentityEvidenceVerifier() {
@Override
public SupportLevel getEvidenceVerifySupport(Class evidenceType, String algorithmName, Supplier providers) throws RealmUnavailableException {
return evidenceType == X509PeerCertificateChainEvidence.class ? SupportLevel.POSSIBLY_SUPPORTED : SupportLevel.UNSUPPORTED;
}
@Override
public boolean verifyEvidence(Evidence evidence, Supplier providers) throws RealmUnavailableException {
if (evidence instanceof X509PeerCertificateChainEvidence) {
X509Certificate certificate = ((X509PeerCertificateChainEvidence) evidence).getFirstCertificate();
try {
for (CertificateVerifier certificateVerifier : certificateVerifiers) {
if ( ! certificateVerifier.verifyCertificate(certificate, attributes)) {
ElytronMessages.log.tracef("X509 client certificate rejected by %s of X509EvidenceVerifier", certificateVerifier);
return false;
}
}
ElytronMessages.log.trace("X509 client certificate accepted by X509EvidenceVerifier");
return true;
} catch (NamingException e) {
throw new RealmUnavailableException(e);
}
}
return false;
}
};
}
@Override
public void addRequiredIdentityAttributes(Collection attributes) {
for (CertificateVerifier verifier : certificateVerifiers) {
verifier.addRequiredLdapAttributes(attributes);
}
}
@Override
public void addBinaryIdentityAttributes(Collection attributes) {
for (CertificateVerifier verifier : certificateVerifiers) {
verifier.addBinaryLdapAttributes(attributes);
}
}
}
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