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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.project;
import static com.google.gerrit.server.project.ProjectCache.illegalState;
import com.google.common.collect.ImmutableMap;
import com.google.gerrit.entities.AccessSection;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.PatchSet;
import com.google.gerrit.entities.Project;
import com.google.gerrit.entities.RefNames;
import com.google.gerrit.exceptions.InvalidNameException;
import com.google.gerrit.extensions.api.access.ProjectAccessInput;
import com.google.gerrit.extensions.common.ChangeInfo;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.BadRequestException;
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.server.approval.ApprovalsUtil;
import com.google.gerrit.server.change.ChangeInserter;
import com.google.gerrit.server.change.ChangeJson;
import com.google.gerrit.server.git.meta.MetaDataUpdate;
import com.google.gerrit.server.notedb.Sequences;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.permissions.ProjectPermission;
import com.google.gerrit.server.permissions.RefPermission;
import com.google.gerrit.server.project.ProjectCache;
import com.google.gerrit.server.project.ProjectConfig;
import com.google.gerrit.server.project.ProjectResource;
import com.google.gerrit.server.update.BatchUpdate;
import com.google.gerrit.server.update.UpdateException;
import com.google.gerrit.server.util.time.TimeUtil;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.List;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
@Singleton
public class CreateAccessChange implements RestModifyView<ProjectResource, ProjectAccessInput> {
private final PermissionBackend permissionBackend;
private final Sequences seq;
private final ChangeInserter.Factory changeInserterFactory;
private final BatchUpdate.Factory updateFactory;
private final Provider<MetaDataUpdate.User> metaDataUpdateFactory;
private final SetAccessUtil setAccess;
private final ChangeJson.Factory jsonFactory;
private final ProjectCache projectCache;
private final ProjectConfig.Factory projectConfigFactory;
@Inject
CreateAccessChange(
PermissionBackend permissionBackend,
ChangeInserter.Factory changeInserterFactory,
BatchUpdate.Factory updateFactory,
Sequences seq,
Provider<MetaDataUpdate.User> metaDataUpdateFactory,
SetAccessUtil accessUtil,
ChangeJson.Factory jsonFactory,
ProjectCache projectCache,
ProjectConfig.Factory projectConfigFactory) {
this.permissionBackend = permissionBackend;
this.seq = seq;
this.changeInserterFactory = changeInserterFactory;
this.updateFactory = updateFactory;
this.metaDataUpdateFactory = metaDataUpdateFactory;
this.setAccess = accessUtil;
this.jsonFactory = jsonFactory;
this.projectCache = projectCache;
this.projectConfigFactory = projectConfigFactory;
}
@Override
public Response<ChangeInfo> apply(ProjectResource rsrc, ProjectAccessInput input)
throws PermissionBackendException, AuthException, IOException, ConfigInvalidException,
InvalidNameException, UpdateException, RestApiException {
PermissionBackend.ForProject forProject =
permissionBackend.user(rsrc.getUser()).project(rsrc.getNameKey());
if (!check(forProject, ProjectPermission.READ_CONFIG)) {
throw new AuthException(RefNames.REFS_CONFIG + " not visible");
}
if (!check(forProject, ProjectPermission.WRITE_CONFIG)) {
try {
forProject.ref(RefNames.REFS_CONFIG).check(RefPermission.CREATE_CHANGE);
} catch (AuthException denied) {
throw new AuthException("cannot create change for " + RefNames.REFS_CONFIG, denied);
}
}
projectCache
.get(rsrc.getNameKey())
.orElseThrow(illegalState(rsrc.getNameKey()))
.checkStatePermitsWrite();
MetaDataUpdate.User metaDataUpdateUser = metaDataUpdateFactory.get();
List<AccessSection> removals = setAccess.getAccessSections(input.remove);
List<AccessSection> additions = setAccess.getAccessSections(input.add);
Project.NameKey newParentProjectName =
input.parent == null ? null : Project.nameKey(input.parent);
try (MetaDataUpdate md = metaDataUpdateUser.create(rsrc.getNameKey())) {
ProjectConfig config = projectConfigFactory.read(md);
ObjectId oldCommit = config.getRevision();
String oldCommitSha1 = oldCommit == null ? null : oldCommit.getName();
setAccess.validateChanges(config, removals, additions);
setAccess.applyChanges(config, removals, additions);
try {
setAccess.setParentName(
rsrc.getUser().asIdentifiedUser(),
config,
rsrc.getNameKey(),
newParentProjectName,
false);
} catch (AuthException e) {
throw new IllegalStateException(e);
}
md.setMessage("Review access change");
md.setInsertChangeId(true);
Change.Id changeId = Change.id(seq.nextChangeId());
RevCommit commit =
config.commitToNewRef(md, PatchSet.id(changeId, Change.INITIAL_PATCH_SET_ID).toRefName());
if (commit.name().equals(oldCommitSha1)) {
throw new BadRequestException("no change");
}
try (ObjectInserter objInserter = md.getRepository().newObjectInserter();
ObjectReader objReader = objInserter.newReader();
RevWalk rw = new RevWalk(objReader);
BatchUpdate bu =
updateFactory.create(rsrc.getNameKey(), rsrc.getUser(), TimeUtil.nowTs())) {
bu.setRepository(md.getRepository(), rw, objInserter);
ChangeInserter ins = newInserter(changeId, commit);
bu.insertChange(ins);
bu.execute();
return Response.created(jsonFactory.noOptions().format(ins.getChange()));
}
} catch (InvalidNameException e) {
throw new BadRequestException(e.toString());
}
}
// ProjectConfig doesn't currently support fusing into a BatchUpdate.
@SuppressWarnings("deprecation")
private ChangeInserter newInserter(Change.Id changeId, RevCommit commit) {
return changeInserterFactory
.create(changeId, commit, RefNames.REFS_CONFIG)
.setMessage(
// Same message as in ReceiveCommits.CreateRequest.
ApprovalsUtil.renderMessageWithApprovals(1, ImmutableMap.of(), ImmutableMap.of()))
.setValidate(false)
.setUpdateRef(false);
}
private boolean check(PermissionBackend.ForProject perm, ProjectPermission p)
throws PermissionBackendException {
try {
perm.check(p);
return true;
} catch (AuthException denied) {
return false;
}
}
}
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