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/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 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;
import static org.wildfly.common.Assert.checkNotNullParam;
import static org.wildfly.security.provider.util.ProviderUtil.INSTALLED_PROVIDERS;
import java.security.Principal;
import java.security.Provider;
import java.security.spec.AlgorithmParameterSpec;
import java.util.Collections;
import java.util.Map;
import java.util.function.Supplier;
import org.wildfly.common.Assert;
import org.wildfly.security.auth.principal.NamePrincipal;
import org.wildfly.security.authz.Attributes;
import org.wildfly.security.authz.AuthorizationIdentity;
import org.wildfly.security.auth.server.RealmIdentity;
import org.wildfly.security.auth.server.RealmUnavailableException;
import org.wildfly.security.auth.server.SecurityRealm;
import org.wildfly.security.auth.server.NameRewriter;
import org.wildfly.security.auth.SupportLevel;
import org.wildfly.security.credential.Credential;
import org.wildfly.security.credential.PasswordCredential;
import org.wildfly.security.evidence.Evidence;
import org.wildfly.security.password.Password;
import static org.wildfly.security.auth.realm.ElytronMessages.log;
/**
* Simple map-backed security realm. Uses an in-memory copy-on-write map methodology to map user names to
* entries. Since this security realm implementation holds all names in memory, it may not be the best choice
* for very large security realms.
*
* @author David M. Lloyd
* @author Darran Lofthouse
*/
public class SimpleMapBackedSecurityRealm implements SecurityRealm {
private final Supplier providers;
private final NameRewriter rewriter;
private volatile Map map = Collections.emptyMap();
/**
* Construct a new instance.
*
* @param rewriter the name rewriter to use (cannot be {@code null})
*/
public SimpleMapBackedSecurityRealm(final NameRewriter rewriter) {
this(rewriter, INSTALLED_PROVIDERS);
}
/**
* Construct a new instance.
*
* @param rewriter the name rewriter to use (cannot be {@code null})
* @param providers a supplier of providers for use by this realm (cannot be {@code null})
*/
public SimpleMapBackedSecurityRealm(final NameRewriter rewriter, final Supplier providers) {
this.rewriter = checkNotNullParam("rewriter", rewriter);
this.providers = checkNotNullParam("provider", providers);
}
/**
* Construct a new instance.
*/
public SimpleMapBackedSecurityRealm() {
this(NameRewriter.IDENTITY_REWRITER);
}
/**
* Construct a new instance.
*
* @param providers a supplier of providers for use by this realm (cannot be {@code null})
*/
public SimpleMapBackedSecurityRealm(final Supplier providers) {
this(NameRewriter.IDENTITY_REWRITER, providers);
}
/**
* Set the realm identity map. Note that the entry map must not be modified after calling this method.
* If it needs to be changed, pass in a new map that is a copy of the old map with the required changes.
*
* @param map the identity map where key is an identity name and value is an identity entry
*/
public void setIdentityMap(final Map map) {
Assert.checkNotNullParam("map", map);
this.map = map;
}
/**
* Set the realm identity map. Note that the entry map must not be modified after calling this method.
* If it needs to be changed, pass in a new map that is a copy of the old map with the required changes.
*
* @param map the identity map
* @deprecated Use {@link #setIdentityMap(Map)} instead.
*/
@Deprecated
public void setPasswordMap(final Map map) {
setIdentityMap(map);
}
/**
* Set the realm identity map to contain a single entry.
*
* @param name the entry name
* @param password the password
* @param attributes the identity attributes
* @deprecated Use {@link #setIdentityMap(Map)} instead.
*/
@Deprecated
public void setPasswordMap(final String name, final Password password, final Attributes attributes) {
setIdentityMap(Collections.singletonMap(name, new SimpleRealmEntry(
Collections.singletonList(new PasswordCredential(password)),
attributes
)));
}
/**
* Set the realm identity map to contain a single entry.
*
* @param name the entry name
* @param password the password
* @deprecated Use {@link #setIdentityMap(Map)} instead.
*/
@Deprecated
public void setPasswordMap(final String name, final Password password) {
setPasswordMap(name, password, Attributes.EMPTY);
}
@Override
public RealmIdentity getRealmIdentity(final Principal principal) {
if (! (principal instanceof NamePrincipal)) {
return RealmIdentity.NON_EXISTENT;
}
String name = rewriter.rewriteName(principal.getName());
if (name == null) {
throw log.invalidName();
}
return new SimpleMapRealmIdentity(name);
}
@Override
public SupportLevel getCredentialAcquireSupport(final Class credentialType, final String algorithmName, final AlgorithmParameterSpec parameterSpec) throws RealmUnavailableException {
Assert.checkNotNullParam("credentialType", credentialType);
return SupportLevel.POSSIBLY_SUPPORTED;
}
@Override
public SupportLevel getEvidenceVerifySupport(final Class evidenceType, final String algorithmName) throws RealmUnavailableException {
Assert.checkNotNullParam("evidenceType", evidenceType);
return SupportLevel.POSSIBLY_SUPPORTED;
}
private class SimpleMapRealmIdentity implements RealmIdentity {
private final String name;
SimpleMapRealmIdentity(final String name) {
this.name = name;
}
public Principal getRealmIdentityPrincipal() {
return new NamePrincipal(name);
}
@Override
public SupportLevel getCredentialAcquireSupport(final Class credentialType, final String algorithmName, final AlgorithmParameterSpec parameterSpec) throws RealmUnavailableException {
Assert.checkNotNullParam("credentialType", credentialType);
final SimpleRealmEntry entry = map.get(name);
if (entry == null) return SupportLevel.UNSUPPORTED;
for (Credential credential : entry.getCredentials()) {
if (credential.matches(credentialType, algorithmName, parameterSpec)) {
return SupportLevel.SUPPORTED;
}
}
return SupportLevel.UNSUPPORTED;
}
@Override
public C getCredential(final Class credentialType) throws RealmUnavailableException {
return getCredential(credentialType, null);
}
@Override
public C getCredential(final Class credentialType, final String algorithmName) throws RealmUnavailableException {
return getCredential(credentialType, algorithmName, null);
}
@Override
public C getCredential(final Class credentialType, final String algorithmName, final AlgorithmParameterSpec parameterSpec) throws RealmUnavailableException {
checkNotNullParam("credentialType", credentialType);
final SimpleRealmEntry entry = map.get(name);
if (entry == null) return null;
for (Credential credential : entry.getCredentials()) {
if (credential.matches(credentialType, algorithmName, parameterSpec)) {
return credentialType.cast(credential.clone());
}
}
return null;
}
@Override
public AuthorizationIdentity getAuthorizationIdentity() {
final SimpleRealmEntry entry = map.get(name);
return entry == null ? AuthorizationIdentity.EMPTY : AuthorizationIdentity.basicIdentity(entry.getAttributes());
}
@Override
public SupportLevel getEvidenceVerifySupport(final Class evidenceType, final String algorithmName) throws RealmUnavailableException {
Assert.checkNotNullParam("evidenceType", evidenceType);
SimpleRealmEntry entry = map.get(name);
if (entry == null) {
return SupportLevel.UNSUPPORTED;
}
for (Credential credential : entry.getCredentials()) {
if (credential.canVerify(evidenceType, algorithmName)) {
return SupportLevel.SUPPORTED;
}
}
return SupportLevel.UNSUPPORTED;
}
@Override
public boolean verifyEvidence(final Evidence evidence) throws RealmUnavailableException {
Assert.checkNotNullParam("evidence", evidence);
SimpleRealmEntry entry = map.get(name);
if (entry == null) {
return false;
}
log.tracef("Trying to authenticate %s using SimpleMapBackedSecurityRealm.", name);
for (Credential credential : entry.getCredentials()) {
if (credential.canVerify(evidence)) {
return credential.verify(providers, evidence);
}
}
return false;
}
@Override
public boolean exists() throws RealmUnavailableException {
return map.containsKey(name);
}
}
}
