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// Copyright (C) 2016 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.project;
import static org.eclipse.jgit.lib.Constants.R_TAGS;
import com.google.common.base.Strings;
import com.google.gerrit.common.TimeUtil;
import com.google.gerrit.common.data.Permission;
import com.google.gerrit.extensions.api.projects.TagInfo;
import com.google.gerrit.extensions.api.projects.TagInput;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.WebLinks;
import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.git.TagCache;
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.RefUtil.InvalidRevisionException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.assistedinject.Assisted;
import java.io.IOException;
import java.util.TimeZone;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.TagCommand;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevWalk;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CreateTag implements RestModifyView<ProjectResource, TagInput> {
private static final Logger log = LoggerFactory.getLogger(CreateTag.class);
public interface Factory {
CreateTag create(String ref);
}
private final PermissionBackend permissionBackend;
private final Provider<IdentifiedUser> identifiedUser;
private final GitRepositoryManager repoManager;
private final TagCache tagCache;
private final GitReferenceUpdated referenceUpdated;
private final WebLinks links;
private String ref;
@Inject
CreateTag(
PermissionBackend permissionBackend,
Provider<IdentifiedUser> identifiedUser,
GitRepositoryManager repoManager,
TagCache tagCache,
GitReferenceUpdated referenceUpdated,
WebLinks webLinks,
@Assisted String ref) {
this.permissionBackend = permissionBackend;
this.identifiedUser = identifiedUser;
this.repoManager = repoManager;
this.tagCache = tagCache;
this.referenceUpdated = referenceUpdated;
this.links = webLinks;
this.ref = ref;
}
@Override
public TagInfo apply(ProjectResource resource, TagInput input)
throws RestApiException, IOException, PermissionBackendException {
if (input == null) {
input = new TagInput();
}
if (input.ref != null && !ref.equals(input.ref)) {
throw new BadRequestException("ref must match URL");
}
if (input.revision == null) {
input.revision = Constants.HEAD;
}
ref = RefUtil.normalizeTagRef(ref);
RefControl refControl = resource.getControl().controlForRef(ref);
PermissionBackend.ForRef perm =
permissionBackend.user(identifiedUser).project(resource.getNameKey()).ref(ref);
try (Repository repo = repoManager.openRepository(resource.getNameKey())) {
ObjectId revid = RefUtil.parseBaseRevision(repo, resource.getNameKey(), input.revision);
RevWalk rw = RefUtil.verifyConnected(repo, revid);
RevObject object = rw.parseAny(revid);
rw.reset();
boolean isAnnotated = Strings.emptyToNull(input.message) != null;
boolean isSigned = isAnnotated && input.message.contains("-----BEGIN PGP SIGNATURE-----\n");
if (isSigned) {
throw new MethodNotAllowedException("Cannot create signed tag \"" + ref + "\"");
} else if (isAnnotated && !refControl.canPerform(Permission.CREATE_TAG)) {
throw new AuthException("Cannot create annotated tag \"" + ref + "\"");
} else {
perm.check(RefPermission.CREATE);
}
if (repo.getRefDatabase().exactRef(ref) != null) {
throw new ResourceConflictException("tag \"" + ref + "\" already exists");
}
try (Git git = new Git(repo)) {
TagCommand tag =
git.tag()
.setObjectId(object)
.setName(ref.substring(R_TAGS.length()))
.setAnnotated(isAnnotated)
.setSigned(isSigned);
if (isAnnotated) {
tag.setMessage(input.message)
.setTagger(
identifiedUser.get().newCommitterIdent(TimeUtil.nowTs(), TimeZone.getDefault()));
}
Ref result = tag.call();
tagCache.updateFastForward(
resource.getNameKey(), ref, ObjectId.zeroId(), result.getObjectId());
referenceUpdated.fire(
resource.getNameKey(),
ref,
ObjectId.zeroId(),
result.getObjectId(),
identifiedUser.get().getAccount());
try (RevWalk w = new RevWalk(repo)) {
return ListTags.createTagInfo(perm, result, w, resource.getNameKey(), links);
}
}
} catch (InvalidRevisionException e) {
throw new BadRequestException("Invalid base revision");
} catch (GitAPIException e) {
log.error("Cannot create tag \"" + ref + "\"", e);
throw new IOException(e);
}
}
}
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