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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).

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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.realm.ldap;

import static org.wildfly.security.auth.realm.ldap.ElytronMessages.log;

import java.net.URI;
import java.net.URISyntaxException;
import java.security.Provider;
import java.util.Properties;
import java.util.function.Supplier;

import javax.naming.AuthenticationException;
import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;

import org.wildfly.security.auth.server.RealmUnavailableException;
import org.wildfly.security.auth.SupportLevel;
import org.wildfly.security.evidence.Evidence;
import org.wildfly.security.evidence.PasswordGuessEvidence;

/**
 * An {@link EvidenceVerifier} that verifies a guess by using it to connect to LDAP.
 *
 * @author Darran Lofthouse
 */
class DirectEvidenceVerifier implements EvidenceVerifier {

    private final boolean allowBlankPassword;

    DirectEvidenceVerifier(boolean allowBlankPassword) {
        this.allowBlankPassword = allowBlankPassword;
    }

    @Override
    public SupportLevel getEvidenceVerifySupport(final Class evidenceType, final String algorithmName) throws RealmUnavailableException {
        return evidenceType == PasswordGuessEvidence.class ? SupportLevel.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(final Class evidenceType, final String algorithmName, final Supplier providers) throws RealmUnavailableException {
                return evidenceType == PasswordGuessEvidence.class && dirContext instanceof LdapContext ? SupportLevel.SUPPORTED : SupportLevel.UNSUPPORTED;
            }

            @Override
            public boolean verifyEvidence(Evidence evidence, final Supplier providers) throws RealmUnavailableException {
                if (evidence instanceof PasswordGuessEvidence) {
                    char[] password = ((PasswordGuessEvidence) evidence).getGuess();
                    try {
                        if ( ! allowBlankPassword && password.length == 0) {
                            log.debugf("Credential direct evidence verification does not allow blank password.");
                            return false;
                        }

                        if (url != null) { // different server - create new context
                            URI uri = new URI(url);
                            String namingProviderURL = uri.getScheme() + "://" + uri.getAuthority();

                            Properties props = new Properties();
                            dirContext.getEnvironment().forEach(props::put);
                            props.put(LdapContext.PROVIDER_URL, namingProviderURL);
                            props.put(LdapContext.SECURITY_PRINCIPAL, distinguishedName);
                            props.put(LdapContext.SECURITY_CREDENTIALS, password);

                            LdapContext userContext;
                            if (dirContext instanceof DelegatingLdapContext) {
                                userContext = ((DelegatingLdapContext) dirContext).newInitialLdapContext(props, null);
                            } else {
                                userContext = new InitialLdapContext(props, null);
                            }
                            userContext.close();
                        } else { // the same context - copy context
                            LdapContext userContext = ((LdapContext) dirContext).newInstance(null);
                            userContext.addToEnvironment(LdapContext.SECURITY_PRINCIPAL, distinguishedName);
                            userContext.addToEnvironment(LdapContext.SECURITY_CREDENTIALS, password);
                            userContext.reconnect(null);
                            userContext.close();
                        }
                        return true;
                    } catch (AuthenticationException e) {
                        log.debugf("Credential direct evidence verification failed. DN: [%s]", distinguishedName, e);
                    } catch (NamingException | URISyntaxException e) {
                        throw log.directLdapVerificationFailed(distinguishedName, url, e);
                    } finally {
                        ((PasswordGuessEvidence) evidence).destroy();
                    }
                }

                return false;
            }

        };
    }
}