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// Copyright (C) 2010 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.query.change;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.entities.Change;
import com.google.gerrit.exceptions.StorageException;
import com.google.gerrit.index.query.IsVisibleToPredicate;
import com.google.gerrit.server.AnonymousUser;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.InternalUser;
import com.google.gerrit.server.index.IndexUtils;
import com.google.gerrit.server.permissions.ChangePermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.project.ProjectCache;
import com.google.gerrit.server.project.ProjectState;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.assistedinject.Assisted;
import java.util.Optional;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
public class ChangeIsVisibleToPredicate extends IsVisibleToPredicate<ChangeData> {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
public interface Factory {
ChangeIsVisibleToPredicate forUser(CurrentUser user);
}
protected final CurrentUser user;
protected final ProjectCache projectCache;
private final PermissionBackend.WithUser withUser;
@Inject
public ChangeIsVisibleToPredicate(
PermissionBackend permissionBackend,
ProjectCache projectCache,
Provider<AnonymousUser> anonymousUserProvider,
@Assisted CurrentUser user) {
super(ChangeQueryBuilder.FIELD_VISIBLETO, IndexUtils.describe(user));
this.user = user;
this.projectCache = projectCache;
withUser =
user.isIdentifiedUser()
? permissionBackend.absentUser(user.getAccountId())
: permissionBackend.user(
Optional.of(user)
.filter(u -> u instanceof GroupBackedUser || u instanceof InternalUser)
.orElseGet(anonymousUserProvider::get));
}
@Override
public boolean match(ChangeData cd) {
if (cd.fastIsVisibleTo(user)) {
return true;
}
Change change = cd.change();
if (change == null) {
return false;
}
Optional<ProjectState> projectState = projectCache.get(cd.project());
if (!projectState.isPresent()) {
logger.atFine().log("Filter out change %s of non-existing project %s", cd, cd.project());
return false;
}
if (!projectState.get().statePermitsRead()) {
logger.atFine().log("Filter out change %s of non-readable project %s", cd, cd.project());
return false;
}
try {
if (!withUser.change(cd).test(ChangePermission.READ)) {
logger.atFine().log("Filter out non-visisble change: %s", cd);
return false;
}
} catch (PermissionBackendException e) {
Throwable cause = e.getCause();
if (cause instanceof RepositoryNotFoundException) {
logger.atWarning().withCause(e).log(
"Filter out change %s because the corresponding repository %s was not found",
cd, cd.project());
return false;
}
throw new StorageException("unable to check permissions on change " + cd.getId(), e);
}
cd.cacheVisibleTo(user);
return true;
}
@Override
public int getCost() {
return 1;
}
}