org.wildfly.security.auth.server.AbstractMechanismAuthenticationFactory Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS 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).
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2015 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.server;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.function.UnaryOperator;
import javax.security.auth.callback.CallbackHandler;
import org.wildfly.common.Assert;
import org.wildfly.security.credential.AlgorithmCredential;
import org.wildfly.security.credential.Credential;
import org.wildfly.security.evidence.AlgorithmEvidence;
import org.wildfly.security.evidence.Evidence;
public abstract class AbstractMechanismAuthenticationFactory implements MechanismAuthenticationFactory {
private final SecurityDomain securityDomain;
private final MechanismConfigurationSelector mechanismConfigurationSelector;
private final F factory;
protected AbstractMechanismAuthenticationFactory(final SecurityDomain securityDomain, final MechanismConfigurationSelector mechanismConfigurationSelector, final F factory) {
this.securityDomain = securityDomain;
this.mechanismConfigurationSelector = mechanismConfigurationSelector;
this.factory = factory;
}
public MechanismConfigurationSelector getMechanismConfigurationSelector() {
return mechanismConfigurationSelector;
}
public SecurityDomain getSecurityDomain() {
return securityDomain;
}
public F getFactory() {
return factory;
}
public M createMechanism(final String name, final UnaryOperator factoryTransformation) throws E {
return doCreate(name, new ServerAuthenticationContext(securityDomain, mechanismConfigurationSelector).createCallbackHandler(), factoryTransformation);
}
protected abstract M doCreate(String name, CallbackHandler callbackHandler, final UnaryOperator factoryTransformation) throws E;
protected abstract Collection> getSupportedEvidenceTypes(String mechName);
protected abstract Collection getSupportedEvidenceAlgorithmNames(Class evidenceType, String mechName);
protected abstract Collection> getSupportedCredentialTypes(String mechName);
protected abstract Collection getSupportedCredentialAlgorithmNames(Class credentialType, String mechName);
/**
* Determine whether the given mechanism name needs credentials from a realm in order to authenticate.
*
* @param mechName the mechanism name
* @return {@code true} if the mechanism requires realm credential support, {@code false} if it does not
*/
protected abstract boolean usesCredentials(String mechName);
/**
* Determine whether the given mechanism name is known to WildFly Elytron.
*
* If it is not known we can't filter it out as we can not rely upon the other methods being able to
* return accurate responses about the mechanisms requirements.
*
* As this is a new method and other implementations may not know to override this has a default
* implementation to match the current behaviour i.e. assume we know about all mechanisms.
*
* @param mechName the mechanism name
* @return {@code true} if the mechanism is known to WildFly Elytron, {@code false} if it is not
*/
protected boolean isKnownMechanism(String mechName) {
return true;
};
public Collection getMechanismNames() {
final Collection names = new LinkedHashSet<>();
top: for (String mechName : getAllSupportedMechNames()) {
// If we don't know about the mech we have to support it as it is likely
// a custom mechanism so our filtering rules will not be correct.
if ((! isKnownMechanism(mechName)) ||
// if the mech doesn't need credentials, then we support it for sure
(! usesCredentials(mechName))) {
names.add(mechName);
continue;
}
final SecurityDomain securityDomain = this.securityDomain;
// if the mech supports verification for a type of evidence we have, we support it
for (Class evidenceType : getSupportedEvidenceTypes(mechName)) {
if (AlgorithmEvidence.class.isAssignableFrom(evidenceType)) {
for (String algorithmName : getSupportedEvidenceAlgorithmNames(evidenceType.asSubclass(AlgorithmEvidence.class), mechName)) {
if ("*".equals(algorithmName) && securityDomain.getEvidenceVerifySupport(evidenceType).mayBeSupported() || securityDomain.getEvidenceVerifySupport(evidenceType, algorithmName).mayBeSupported()) {
names.add(mechName);
continue top;
}
}
} else {
if (securityDomain.getEvidenceVerifySupport(evidenceType).mayBeSupported()) {
names.add(mechName);
continue top;
}
}
}
// if the mech supports a type of credential we have, we support it
for (Class credentialType : getSupportedCredentialTypes(mechName)) {
if (AlgorithmCredential.class.isAssignableFrom(credentialType)) {
for (String algorithmName : getSupportedCredentialAlgorithmNames(credentialType.asSubclass(AlgorithmCredential.class), mechName)) {
if ("*".equals(algorithmName) && securityDomain.getCredentialAcquireSupport(credentialType).mayBeSupported() || securityDomain.getCredentialAcquireSupport(credentialType, algorithmName).mayBeSupported()) {
names.add(mechName);
continue top;
}
}
} else {
if (securityDomain.getCredentialAcquireSupport(credentialType).mayBeSupported()) {
names.add(mechName);
continue top;
}
}
}
}
return names;
}
protected abstract Collection getAllSupportedMechNames();
protected abstract static class Builder implements MechanismAuthenticationFactory.Builder {
private SecurityDomain securityDomain;
private MechanismConfigurationSelector mechanismConfigurationSelector;
private F factory;
protected Builder() {
}
public Builder setSecurityDomain(final SecurityDomain securityDomain) {
Assert.checkNotNullParam("securityDomain", securityDomain);
this.securityDomain = securityDomain;
return this;
}
public Builder setMechanismConfigurationSelector(final MechanismConfigurationSelector mechanismConfigurationSelector) {
this.mechanismConfigurationSelector = mechanismConfigurationSelector;
return this;
}
public Builder setFactory(final F factory) {
Assert.checkNotNullParam("factory", factory);
this.factory = factory;
return this;
}
public SecurityDomain getSecurityDomain() {
return securityDomain;
}
public MechanismConfigurationSelector getMechanismConfigurationSelector() {
return mechanismConfigurationSelector;
}
public F getFactory() {
return factory;
}
}
}