| // 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; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import com.google.gerrit.server.plugincontext.PluginSetContext; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** Universal implementation of the AuthBackend that works with the injected set of AuthBackends. */ |
| @Singleton |
| public final class UniversalAuthBackend implements AuthBackend { |
| private final PluginSetContext<AuthBackend> authBackends; |
| |
| @Inject |
| UniversalAuthBackend(PluginSetContext<AuthBackend> authBackends) { |
| this.authBackends = authBackends; |
| } |
| |
| @Override |
| public AuthUser authenticate(AuthRequest request) throws AuthException { |
| List<AuthUser> authUsers = new ArrayList<>(); |
| List<AuthException> authExs = new ArrayList<>(); |
| authBackends.runEach( |
| backend -> { |
| try { |
| authUsers.add(requireNonNull(backend.authenticate(request))); |
| } catch (MissingCredentialsException ex) { |
| // Not handled by this backend. |
| } catch (AuthException ex) { |
| authExs.add(ex); |
| } |
| }); |
| |
| // Handle the valid responses |
| if (authUsers.size() == 1) { |
| return authUsers.get(0); |
| } else if (authUsers.isEmpty() && authExs.size() == 1) { |
| throw authExs.get(0); |
| } else if (authExs.isEmpty() && authUsers.isEmpty()) { |
| throw new MissingCredentialsException(); |
| } |
| |
| String msg = |
| String.format( |
| "Multiple AuthBackends attempted to handle request: authUsers=%s authExs=%s", |
| authUsers, authExs); |
| throw new AuthException(msg); |
| } |
| |
| @Override |
| public String getDomain() { |
| throw new UnsupportedOperationException("UniversalAuthBackend doesn't support domain."); |
| } |
| } |