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// Copyright (C) 2012 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.httpd.rpc.project;
import static com.google.gerrit.common.ProjectAccessUtil.mergeSections;
import com.google.common.base.MoreObjects;
import com.google.gerrit.common.data.AccessSection;
import com.google.gerrit.common.data.GroupReference;
import com.google.gerrit.common.data.Permission;
import com.google.gerrit.common.data.PermissionRule;
import com.google.gerrit.common.errors.InvalidNameException;
import com.google.gerrit.common.errors.NoSuchGroupException;
import com.google.gerrit.common.errors.PermissionDeniedException;
import com.google.gerrit.common.errors.UpdateParentFailedException;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
import com.google.gerrit.httpd.rpc.Handler;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.account.GroupBackend;
import com.google.gerrit.server.account.GroupBackends;
import com.google.gerrit.server.config.AllProjectsName;
import com.google.gerrit.server.git.MetaDataUpdate;
import com.google.gerrit.server.git.ProjectConfig;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.project.ContributorAgreementsChecker;
import com.google.gerrit.server.project.NoSuchProjectException;
import com.google.gerrit.server.project.ProjectControl;
import com.google.gerrit.server.project.RefPattern;
import com.google.gerrit.server.project.SetParent;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Provider;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.ObjectId;
public abstract class ProjectAccessHandler<T> extends Handler<T> {
private final ProjectControl.Factory projectControlFactory;
protected final GroupBackend groupBackend;
private final MetaDataUpdate.User metaDataUpdateFactory;
private final AllProjectsName allProjects;
private final Provider<SetParent> setParent;
private final ContributorAgreementsChecker contributorAgreements;
protected final Project.NameKey projectName;
protected final ObjectId base;
private List<AccessSection> sectionList;
private final Project.NameKey parentProjectName;
protected String message;
private boolean checkIfOwner;
protected ProjectAccessHandler(
ProjectControl.Factory projectControlFactory,
GroupBackend groupBackend,
MetaDataUpdate.User metaDataUpdateFactory,
AllProjectsName allProjects,
Provider<SetParent> setParent,
Project.NameKey projectName,
ObjectId base,
List<AccessSection> sectionList,
Project.NameKey parentProjectName,
String message,
ContributorAgreementsChecker contributorAgreements,
boolean checkIfOwner) {
this.projectControlFactory = projectControlFactory;
this.groupBackend = groupBackend;
this.metaDataUpdateFactory = metaDataUpdateFactory;
this.allProjects = allProjects;
this.setParent = setParent;
this.projectName = projectName;
this.base = base;
this.sectionList = sectionList;
this.parentProjectName = parentProjectName;
this.message = message;
this.contributorAgreements = contributorAgreements;
this.checkIfOwner = checkIfOwner;
}
@Override
public final T call()
throws NoSuchProjectException, IOException, ConfigInvalidException, InvalidNameException,
NoSuchGroupException, OrmException, UpdateParentFailedException,
PermissionDeniedException, PermissionBackendException {
final ProjectControl projectControl = projectControlFactory.controlFor(projectName);
try {
contributorAgreements.check(projectName, projectControl.getUser());
} catch (AuthException e) {
throw new PermissionDeniedException(e.getMessage());
}
try (MetaDataUpdate md = metaDataUpdateFactory.create(projectName)) {
ProjectConfig config = ProjectConfig.read(md, base);
Set<String> toDelete = scanSectionNames(config);
for (AccessSection section : mergeSections(sectionList)) {
String name = section.getName();
if (AccessSection.GLOBAL_CAPABILITIES.equals(name)) {
if (checkIfOwner && !projectControl.isOwner()) {
continue;
}
replace(config, toDelete, section);
} else if (AccessSection.isValid(name)) {
if (checkIfOwner && !projectControl.controlForRef(name).isOwner()) {
continue;
}
RefPattern.validate(name);
replace(config, toDelete, section);
}
}
for (String name : toDelete) {
if (AccessSection.GLOBAL_CAPABILITIES.equals(name)) {
if (!checkIfOwner || projectControl.isOwner()) {
config.remove(config.getAccessSection(name));
}
} else if (!checkIfOwner || projectControl.controlForRef(name).isOwner()) {
config.remove(config.getAccessSection(name));
}
}
boolean parentProjectUpdate = false;
if (!config.getProject().getNameKey().equals(allProjects)
&& !config.getProject().getParent(allProjects).equals(parentProjectName)) {
parentProjectUpdate = true;
try {
setParent
.get()
.validateParentUpdate(
projectControl.getProject().getNameKey(),
projectControl.getUser().asIdentifiedUser(),
MoreObjects.firstNonNull(parentProjectName, allProjects).get(),
checkIfOwner);
} catch (AuthException e) {
throw new UpdateParentFailedException(
"You are not allowed to change the parent project since you are "
+ "not an administrator. You may save the modifications for review "
+ "so that an administrator can approve them.",
e);
} catch (ResourceConflictException | UnprocessableEntityException e) {
throw new UpdateParentFailedException(e.getMessage(), e);
}
config.getProject().setParentName(parentProjectName);
}
if (message != null && !message.isEmpty()) {
if (!message.endsWith("\n")) {
message += "\n";
}
md.setMessage(message);
} else {
md.setMessage("Modify access rules\n");
}
return updateProjectConfig(projectControl, config, md, parentProjectUpdate);
} catch (RepositoryNotFoundException notFound) {
throw new NoSuchProjectException(projectName);
}
}
protected abstract T updateProjectConfig(
ProjectControl projectControl,
ProjectConfig config,
MetaDataUpdate md,
boolean parentProjectUpdate)
throws IOException, NoSuchProjectException, ConfigInvalidException, OrmException,
PermissionDeniedException, PermissionBackendException;
private void replace(ProjectConfig config, Set<String> toDelete, AccessSection section)
throws NoSuchGroupException {
for (Permission permission : section.getPermissions()) {
for (PermissionRule rule : permission.getRules()) {
lookupGroup(rule);
}
}
config.replace(section);
toDelete.remove(section.getName());
}
private static Set<String> scanSectionNames(ProjectConfig config) {
Set<String> names = new HashSet<>();
for (AccessSection section : config.getAccessSections()) {
names.add(section.getName());
}
return names;
}
private void lookupGroup(PermissionRule rule) throws NoSuchGroupException {
GroupReference ref = rule.getGroup();
if (ref.getUUID() == null) {
final GroupReference group = GroupBackends.findBestSuggestion(groupBackend, ref.getName());
if (group == null) {
throw new NoSuchGroupException(ref.getName());
}
ref.setUUID(group.getUUID());
}
}
}
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