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// Copyright (C) 2013 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.project;
import com.google.gerrit.entities.Project;
import com.google.gerrit.entities.RefNames;
import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.ChildCollection;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.permissions.RefPermission;
import com.google.gerrit.server.project.BranchResource;
import com.google.gerrit.server.project.ProjectResource;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
@Singleton
public class BranchesCollection implements ChildCollection<ProjectResource, BranchResource> {
private final DynamicMap<RestView<BranchResource>> views;
private final Provider<ListBranches> list;
private final PermissionBackend permissionBackend;
private final GitRepositoryManager repoManager;
@Inject
BranchesCollection(
DynamicMap<RestView<BranchResource>> views,
Provider<ListBranches> list,
PermissionBackend permissionBackend,
GitRepositoryManager repoManager) {
this.views = views;
this.list = list;
this.permissionBackend = permissionBackend;
this.repoManager = repoManager;
}
@Override
public RestView<ProjectResource> list() {
return list.get();
}
@Override
public BranchResource parse(ProjectResource parent, IdString id)
throws RestApiException, IOException, PermissionBackendException {
parent.getProjectState().checkStatePermitsRead();
Project.NameKey project = parent.getNameKey();
try (Repository repo = repoManager.openRepository(project)) {
Ref ref = repo.exactRef(RefNames.fullName(id.get()));
if (ref == null) {
throw new ResourceNotFoundException(id);
}
// ListBranches checks the target of a symbolic reference to determine access
// rights on the symbolic reference itself. This check prevents seeing a hidden
// branch simply because the symbolic reference name was visible.
boolean canRead =
permissionBackend
.currentUser()
.project(project)
.ref(ref.isSymbolic() ? ref.getTarget().getName() : ref.getName())
.test(RefPermission.READ);
if (canRead) {
return new BranchResource(parent.getProjectState(), parent.getUser(), ref);
}
throw new ResourceNotFoundException(id);
} catch (RepositoryNotFoundException noRepo) {
throw new ResourceNotFoundException(id, noRepo);
}
}
@Override
public DynamicMap<RestView<BranchResource>> views() {
return views;
}
}