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DoPrivileged.java
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DoPrivileged.java
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/*
* SonarQube
* Copyright (C) 2009-2018 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.server.user;
import java.util.Collection;
import java.util.Collections;
import java.util.Optional;
import org.sonar.db.organization.OrganizationDto;
import org.sonar.db.permission.OrganizationPermission;
import org.sonar.db.user.GroupDto;
/**
* Allow code to be executed with the highest privileges possible, as if executed by a {@link OrganizationPermission#ADMINISTER} account.
* @since 4.3
*/
public final class DoPrivileged {
private DoPrivileged() {
// Only static stuff
}
/**
* Executes the task's <code>{@link Task#doPrivileged() doPrivileged}</code> method in a privileged environment.
* @param task
*/
public static void execute(Task task) {
try {
task.start();
task.doPrivileged();
} finally {
task.stop();
}
}
/**
* Define a task that will be executed using the highest privileges available. The privileged section is restricted
* to the execution of the {@link #doPrivileged()} method.
*/
public abstract static class Task {
private final ThreadLocalUserSession threadLocalUserSession;
private UserSession oldUserSession;
protected Task(ThreadLocalUserSession threadLocalUserSession) {
this.threadLocalUserSession = threadLocalUserSession;
}
/**
* Code placed in this method will be executed in a privileged environment.
*/
protected abstract void doPrivileged();
private static class PrivilegedUserSession extends AbstractUserSession {
@Override
public String getLogin() {
return null;
}
@Override
public String getUuid() {
return null;
}
@Override
public String getName() {
return null;
}
@Override
public Integer getUserId() {
return null;
}
@Override
public Collection<GroupDto> getGroups() {
return Collections.emptyList();
}
@Override
public boolean isLoggedIn() {
return false;
}
@Override
public boolean isRoot() {
return true;
}
@Override
protected boolean hasPermissionImpl(OrganizationPermission permission, String organizationUuid) {
return true;
}
@Override
protected Optional<String> componentUuidToProjectUuid(String componentUuid) {
// always root so unused
throw new UnsupportedOperationException();
}
@Override
protected boolean hasProjectUuidPermission(String permission, String projectUuid) {
return true;
}
@Override
public boolean isSystemAdministrator() {
return true;
}
@Override
public boolean hasMembershipImpl(OrganizationDto organization) {
return true;
}
}
private void start() {
oldUserSession = threadLocalUserSession.hasSession() ? threadLocalUserSession.get() : null;
threadLocalUserSession.set(new PrivilegedUserSession());
}
private void stop() {
threadLocalUserSession.unload();
if (oldUserSession != null) {
threadLocalUserSession.set(oldUserSession);
}
}
}
}