com.google.gerrit.server.auth.ldap.LdapAuthBackend Maven / Gradle / Ivy
// Copyright (C) 2012 The Android Open Source Project
//
// 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 com.google.gerrit.server.auth.ldap;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.extensions.client.AuthType;
import com.google.gerrit.server.account.AccountException;
import com.google.gerrit.server.auth.AuthBackend;
import com.google.gerrit.server.auth.AuthException;
import com.google.gerrit.server.auth.AuthRequest;
import com.google.gerrit.server.auth.AuthUser;
import com.google.gerrit.server.auth.InvalidCredentialsException;
import com.google.gerrit.server.auth.MissingCredentialsException;
import com.google.gerrit.server.auth.UnknownUserException;
import com.google.gerrit.server.auth.UserNotAllowedException;
import com.google.gerrit.server.config.AuthConfig;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.inject.Inject;
import java.io.IOException;
import java.util.Locale;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.security.auth.login.LoginException;
import org.eclipse.jgit.lib.Config;
/** Implementation of AuthBackend for the LDAP authentication system. */
public class LdapAuthBackend implements AuthBackend {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
private final Helper helper;
private final AuthConfig authConfig;
private final boolean lowerCaseUsername;
@Inject
public LdapAuthBackend(Helper helper, AuthConfig authConfig, @GerritServerConfig Config config) {
this.helper = helper;
this.authConfig = authConfig;
this.lowerCaseUsername = config.getBoolean("ldap", "localUsernameToLowerCase", false);
}
@Override
public String getDomain() {
return "ldap";
}
@Override
public AuthUser authenticate(AuthRequest req)
throws MissingCredentialsException, InvalidCredentialsException, UnknownUserException,
UserNotAllowedException, AuthException {
if (!req.getUsername().isPresent() || !req.getPassword().isPresent()) {
throw new MissingCredentialsException();
}
String username =
lowerCaseUsername
? req.getUsername().map(u -> u.toLowerCase(Locale.US)).get()
: req.getUsername().get();
try {
final DirContext ctx;
if (authConfig.getAuthType() == AuthType.LDAP_BIND) {
ctx = helper.authenticate(username, req.getPassword().get());
} else {
ctx = helper.open();
}
try {
final Helper.LdapSchema schema = helper.getSchema(ctx);
final LdapQuery.Result m = helper.findAccount(schema, ctx, username, false);
if (authConfig.getAuthType() == AuthType.LDAP) {
// We found the user account, but we need to verify
// the password matches it before we can continue.
//
helper.close(helper.authenticate(m.getDN(), req.getPassword().get()));
}
return new AuthUser(AuthUser.UUID.create(username), username);
} finally {
helper.close(ctx);
}
} catch (AccountException e) {
logger.atSevere().withCause(e).log("Cannot query LDAP to authenticate user");
throw new InvalidCredentialsException("Cannot query LDAP for account", e);
} catch (IOException | NamingException e) {
logger.atSevere().withCause(e).log("Cannot query LDAP to authenticate user");
throw new AuthException("Cannot query LDAP for account", e);
} catch (LoginException e) {
logger.atSevere().withCause(e).log("Cannot authenticate server via JAAS");
throw new AuthException("Cannot query LDAP for account", e);
}
}
}