org.wildfly.security.auth.realm.JaasSecurityRealm 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).
/*
* 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.security.auth.realm.ElytronMessages.log;
import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.Configuration;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URI;
import java.nio.file.Paths;
import java.security.NoSuchAlgorithmException;
import java.security.Principal;
import java.security.Security;
import java.security.URIParameter;
import java.security.spec.AlgorithmParameterSpec;
import org.wildfly.common.Assert;
import org.wildfly.security.auth.callback.CredentialCallback;
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.SupportLevel;
import org.wildfly.security.authz.MapAttributes;
import org.wildfly.security.credential.Credential;
import org.wildfly.security.evidence.Evidence;
import org.wildfly.security.evidence.PasswordGuessEvidence;
/**
* A JAAS based {@link SecurityRealm} implementation.
*
* @author Stefan Guilhen
*/
public class JaasSecurityRealm implements SecurityRealm {
private static final String DEFAULT_CONFIGURATION_POLICY_TYPE = "JavaLoginConfig";
private final URI jaasConfigFilePath;
private final String entry;
private final CallbackHandler handler;
private final ClassLoader classLoader;
/**
* Construct a new instance.
*
* @param entry JAAS configuration file entry (must not be {@code null})
*/
public JaasSecurityRealm(final String entry) {
this(entry, (String) null);
}
/**
* Construct a new instance.
*
* @param entry JAAS configuration file entry (must not be {@code null})
* @param classLoader classLoader to use with LoginContext, this class loader must contain LoginModule CallbackHandler classes
*/
public JaasSecurityRealm(final String entry, final ClassLoader classLoader) {
this(entry, null, classLoader);
}
/**
* Construct a new instance.
*
* @param entry JAAS configuration file entry (must not be {@code null})
* @param jaasConfigFilePath path to JAAS configuration file
*/
public JaasSecurityRealm(final String entry, final String jaasConfigFilePath) {
this(entry, jaasConfigFilePath, null);
}
/**
* Construct a new instance.
*
* @param entry JAAS configuration file entry (must not be {@code null})
* @param jaasConfigFilePath path to JAAS configuration file
* @param classLoader classLoader to use with LoginContext, this class loader must contain LoginModule CallbackHandler classes
*/
public JaasSecurityRealm(final String entry, final String jaasConfigFilePath, final ClassLoader classLoader) {
this(entry, jaasConfigFilePath, classLoader, null);
}
/**
* Construct a new instance.
*
* @param entry JAAS configuration file entry (must not be {@code null})
* @param jaasConfigFilePath path to JAAS configuration file
* @param callbackHandler callbackHandler to pass to LoginContext
* @param classLoader classLoader to use with LoginContext, this class loader must contain LoginModule CallbackHandler classes
*/
public JaasSecurityRealm(final String entry, final String jaasConfigFilePath, final ClassLoader classLoader, final CallbackHandler callbackHandler) {
Assert.checkNotNullParam("entry", entry);
if (jaasConfigFilePath != null) {
this.jaasConfigFilePath = Paths.get(jaasConfigFilePath).toUri();
} else {
this.jaasConfigFilePath = null;
}
this.entry = entry;
this.handler = callbackHandler;
if (classLoader != null) {
this.classLoader = classLoader;
} else {
this.classLoader = Thread.currentThread().getContextClassLoader();
}
}
@Override
public RealmIdentity getRealmIdentity(final Principal principal) {
return new JaasRealmIdentity(principal);
}
@Override
public SupportLevel getCredentialAcquireSupport(final Class credentialType, final String algorithmName, final AlgorithmParameterSpec parameterSpec) throws RealmUnavailableException {
Assert.checkNotNullParam("credentialType", credentialType);
return SupportLevel.UNSUPPORTED;
}
@Override
public SupportLevel getEvidenceVerifySupport(final Class evidenceType, final String algorithmName) throws RealmUnavailableException {
Assert.checkNotNullParam("evidenceType", evidenceType);
return SupportLevel.POSSIBLY_SUPPORTED;
}
/**
* @param entry login configuration file entry
* @param subject classLoader to use with LoginContext, this class loader must contain LoginModule CallbackHandler classes
* @param callbackHandler callbackHandler to pass to LoginContext
* @return the instance of LoginContext
* @throws RealmUnavailableException
*/
private LoginContext createLoginContext(final String entry, final Subject subject, final CallbackHandler callbackHandler) throws RealmUnavailableException {
if (jaasConfigFilePath != null) {
File file = new File(this.jaasConfigFilePath);
if (!file.exists() && !file.isDirectory()) {
throw ElytronMessages.log.failedToLoadJaasConfigFile();
}
}
try {
if (jaasConfigFilePath == null) {
return new LoginContext(entry, subject, callbackHandler);
} else {
return new LoginContext(entry, subject, callbackHandler, Configuration.getInstance(DEFAULT_CONFIGURATION_POLICY_TYPE, new URIParameter(jaasConfigFilePath)));
}
} catch (LoginException | NoSuchAlgorithmException le) {
throw ElytronMessages.log.failedToCreateLoginContext(le);
}
}
private CallbackHandler createCallbackHandler(final Principal principal, final Evidence evidence) {
if (handler != null) {
try {
final CallbackHandler callbackHandler = handler.getClass().getConstructor().newInstance();
// custom handlers were allowed in the past as long as they had a public setSecurityInfo method. Use this method if it exists
final Method setSecurityInfo = handler.getClass().getMethod("setSecurityInfo", Principal.class, Object.class);
setSecurityInfo.invoke(callbackHandler, principal, evidence);
return callbackHandler;
} catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
// ignore if this method does not exist
return handler;
}
} else if (Security.getProperty("auth.login.defaultCallbackHandler") != null) {
// security property "auth.login.defaultCallbackHandler" is not null so LoginContext will initialize it itself
return null;
} else {
return new JaasSecurityRealmDefaultCallbackHandler(principal, evidence);
}
}
private class JaasRealmIdentity implements RealmIdentity {
private final Principal principal;
private LoginContext loginContext;
private Subject subject;
private JaasRealmIdentity(final Principal principal) {
this.principal = principal;
}
public Principal getRealmIdentityPrincipal() {
return principal;
}
public Subject getSubject() {
return subject;
}
@Override
public SupportLevel getCredentialAcquireSupport(final Class credentialType, final String algorithmName, final AlgorithmParameterSpec parameterSpec) throws RealmUnavailableException {
return JaasSecurityRealm.this.getCredentialAcquireSupport(credentialType, algorithmName, parameterSpec);
}
@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 {
return null;
}
@Override
public SupportLevel getEvidenceVerifySupport(final Class evidenceType, final String algorithmName) throws RealmUnavailableException {
Assert.checkNotNullParam("evidenceType", evidenceType);
return JaasSecurityRealm.this.getEvidenceVerifySupport(evidenceType, algorithmName);
}
@Override
public boolean verifyEvidence(final Evidence evidence) throws RealmUnavailableException {
Assert.checkNotNullParam("evidence", evidence);
this.subject = null;
boolean successfulLogin;
ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
try {
if (classLoader != null) {
Thread.currentThread().setContextClassLoader(classLoader);
}
final CallbackHandler callbackHandler = createCallbackHandler(principal, evidence);
final Subject subject = new Subject();
loginContext = createLoginContext(entry, subject, callbackHandler);
log.tracef("Trying to authenticate subject %s using LoginContext %s using JaasSecurityRealm", principal, loginContext);
try {
loginContext.login();
successfulLogin = true;
this.subject = loginContext.getSubject();
} catch (LoginException loginException) {
successfulLogin = false;
ElytronMessages.log.debugInfoJaasAuthenticationFailure(principal, loginException);
}
} finally {
Thread.currentThread().setContextClassLoader(oldClassLoader);
}
return successfulLogin;
}
public boolean exists() {
/* we don't really know that the identity exists, but we know that there is always
* an authorization identity so that's as good as {@code true}
*/
return true;
}
@Override
public AuthorizationIdentity getAuthorizationIdentity() throws RealmUnavailableException {
return JaasAuthorizationIdentity.fromSubject(subject);
}
@Override
public void dispose() {
// call logout in order to empty the subject
ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
try {
try {
if (classLoader != null) {
Thread.currentThread().setContextClassLoader(classLoader);
}
if (loginContext != null) {
loginContext.logout();
}
} catch (LoginException e) {
ElytronMessages.log.debugInfoJaasLogoutFailure(this.principal, e);
}
} finally {
Thread.currentThread().setContextClassLoader(oldClassLoader);
}
}
}
/**
* Default CallbackHandler passed to the LoginContext when none is provided to JAAS security realm and none is configured in the "auth.login.defaultCallbackHandler" security property.
*/
private static class JaasSecurityRealmDefaultCallbackHandler implements CallbackHandler {
private final Principal principal;
private final Object evidence;
private JaasSecurityRealmDefaultCallbackHandler(final Principal principal, final Evidence evidence) {
this.principal = principal;
this.evidence = evidence;
}
@Override
public void handle(Callback[] callbacks) throws UnsupportedCallbackException {
Assert.checkNotNullParam("callbacks", callbacks);
for (Callback callback : callbacks) {
if (callback instanceof NameCallback) {
NameCallback nc = (NameCallback) callback;
if (principal != null)
nc.setName(principal.getName());
} else if (callback instanceof PasswordCallback) {
if (evidence instanceof PasswordGuessEvidence) {
((PasswordCallback) callback).setPassword(((PasswordGuessEvidence) evidence).getGuess());
} else {
PasswordCallback pc = (PasswordCallback) callback;
char[] password = getPassword();
if (password != null)
pc.setPassword(password);
}
} else if (callback instanceof CredentialCallback && evidence instanceof Credential) {
final CredentialCallback credentialCallback = (CredentialCallback) callback;
Credential credential = (Credential) evidence;
if (credentialCallback.isCredentialSupported(credential)) {
credentialCallback.setCredential(credential);
}
} else {
throw ElytronMessages.log.unableToHandleCallback(callback, this.getClass().getName(), callback.getClass().getCanonicalName());
}
}
}
/**
* Source: A utility method for obtaining of password taken from
* https://github.com/picketbox/picketbox/blob/master/security-jboss-sx/jbosssx/src/main/java/org/jboss/security/auth/callback/JBossCallbackHandler.java
* on November 2021
*
* Try to convert the credential value into a char[] using the
* first of the following attempts which succeeds:
*
* 1. Check for instanceof char[]
* 2. Check for instanceof String and then use toCharArray()
* 3. See if credential has a toCharArray() method and use it
* 4. Use toString() followed by toCharArray().
*
* @return a char[] representation of the credential.
*/
private char[] getPassword() {
char[] password = null;
if (evidence instanceof char[]) {
password = (char[]) evidence;
} else if (evidence instanceof String) {
String s = (String) evidence;
password = s.toCharArray();
} else {
try {
Class[] types = {};
Method m = evidence.getClass().getMethod("toCharArray", types);
Object[] args = {};
password = (char[]) m.invoke(evidence, args);
} catch (Exception e) {
if (evidence != null) {
String s = evidence.toString();
password = s.toCharArray();
}
}
}
return password;
}
}
/**
* A JAAS realm's authorization identity. Roles are mapped from all Subject's principals with the following rule:
* key of the attribute is principal's simple classname and the value is principal's name
*/
private static class JaasAuthorizationIdentity implements AuthorizationIdentity {
private MapAttributes attributes;
private static JaasAuthorizationIdentity fromSubject(final Subject subject) {
MapAttributes attributes = new MapAttributes();
// map all subject's principals to attributes with the following rule:
// key of the attribute is principal's simple classname and the value is principal's name
if (subject != null) {
for (Principal principal : subject.getPrincipals()) {
attributes.addLast(principal.getClass().getSimpleName(), principal.getName());
}
}
return new JaasAuthorizationIdentity(attributes);
}
private JaasAuthorizationIdentity(MapAttributes attributes) {
this.attributes = attributes;
}
@Override
public Attributes getAttributes() {
return attributes;
}
}
}