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// Copyright (C) 2017 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.restapi.account;
import static com.google.gerrit.server.account.externalids.ExternalId.SCHEME_USERNAME;
import static java.util.stream.Collectors.toMap;
import static java.util.stream.Collectors.toSet;
import com.google.common.collect.ImmutableSet;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.account.AccountException;
import com.google.gerrit.server.account.AccountManager;
import com.google.gerrit.server.account.AccountResource;
import com.google.gerrit.server.account.externalids.ExternalId;
import com.google.gerrit.server.account.externalids.ExternalIdKeyFactory;
import com.google.gerrit.server.account.externalids.ExternalIds;
import com.google.gerrit.server.permissions.GlobalPermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.function.Function;
import org.eclipse.jgit.errors.ConfigInvalidException;
/**
* REST endpoint to delete external IDs from an account.
*
* <p>This REST endpoint handles {@code POST /accounts/<account-identifier>/external.ids:delete}
* requests.
*/
@Singleton
public class DeleteExternalIds implements RestModifyView<AccountResource, List<String>> {
private final PermissionBackend permissionBackend;
private final AccountManager accountManager;
private final ExternalIds externalIds;
private final Provider<CurrentUser> self;
private final ExternalIdKeyFactory externalIdKeyFactory;
@Inject
DeleteExternalIds(
PermissionBackend permissionBackend,
AccountManager accountManager,
ExternalIds externalIds,
Provider<CurrentUser> self,
ExternalIdKeyFactory externalIdKeyFactory) {
this.permissionBackend = permissionBackend;
this.accountManager = accountManager;
this.externalIds = externalIds;
this.self = self;
this.externalIdKeyFactory = externalIdKeyFactory;
}
@Override
public Response<?> apply(AccountResource resource, List<String> extIds)
throws RestApiException, IOException, ConfigInvalidException, PermissionBackendException {
if (!self.get().hasSameAccountId(resource.getUser())) {
permissionBackend.currentUser().check(GlobalPermission.MODIFY_ACCOUNT);
}
if (extIds == null || extIds.isEmpty()) {
throw new BadRequestException("external IDs are required");
}
Map<ExternalId.Key, ExternalId> externalIdMap =
externalIds.byAccount(resource.getUser().getAccountId()).stream()
.collect(toMap(ExternalId::key, Function.identity()));
List<ExternalId> toDelete = new ArrayList<>();
Optional<ExternalId.Key> last = resource.getUser().getLastLoginExternalIdKey();
for (String externalIdStr : extIds) {
ExternalId id = externalIdMap.get(externalIdKeyFactory.parse(externalIdStr));
if (id == null) {
throw new UnprocessableEntityException(
String.format("External id %s does not exist", externalIdStr));
}
if (!last.isPresent() || !last.get().equals(id.key())) {
if (id.isScheme(SCHEME_USERNAME)) {
if (self.get().hasSameAccountId(resource.getUser())) {
throw new AuthException("User cannot delete its own externalId in 'username:' scheme");
}
permissionBackend
.currentUser()
.checkAny(
ImmutableSet.of(
GlobalPermission.ADMINISTRATE_SERVER, GlobalPermission.MAINTAIN_SERVER));
}
toDelete.add(id);
} else {
throw new ResourceConflictException(
String.format("External id %s cannot be deleted", externalIdStr));
}
}
try {
accountManager.unlink(
resource.getUser().getAccountId(),
toDelete.stream().map(ExternalId::key).collect(toSet()));
} catch (AccountException e) {
throw new ResourceConflictException(e.getMessage());
}
return Response.none();
}
}