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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SANDBOX_LINUX_SUID_SETUID_SANDBOX_CLIENT_H_
#define SANDBOX_LINUX_SUID_SETUID_SANDBOX_CLIENT_H_
#include "base/basictypes.h"
#include "base/callback_forward.h"
namespace base { class Environment; }
namespace sandbox {
// Helper class to use the setuid sandbox. This class is to be used both
// before launching the setuid helper and after being executed through the
// setuid helper.
//
// A typical use would be:
// 1. The browser calls SetupLaunchEnvironment()
// 2. The browser launches a renderer through the setuid sandbox.
// 3. The renderer requests being chroot-ed through ChrootMe() and
// requests other sandboxing status via the status functions.
class SetuidSandboxClient {
public:
// All instantation should go through this factory method.
static class SetuidSandboxClient* Create();
~SetuidSandboxClient();
// Ask the setuid helper over the setuid sandbox IPC channel to chroot() us
// to an empty directory.
// Will only work if we have been launched through the setuid helper.
bool ChrootMe();
// When a new PID namespace is created, the process with pid == 1 should
// assume the role of init.
// See sandbox/linux/services/init_process_reaper.h for more information
// on this API.
bool CreateInitProcessReaper(base::Closure* post_fork_parent_callback);
// Did we get launched through an up to date setuid binary ?
bool IsSuidSandboxUpToDate() const;
// Did we get launched through the setuid helper ?
bool IsSuidSandboxChild() const;
// Did the setuid helper create a new PID namespace ?
bool IsInNewPIDNamespace() const;
// Did the setuid helper create a new network namespace ?
bool IsInNewNETNamespace() const;
// Are we done and fully sandboxed ?
bool IsSandboxed() const;
// Set-up the environment. This should be done prior to launching the setuid
// helper.
void SetupLaunchEnvironment();
private:
// Holds the environment. Will never be NULL.
base::Environment* env_;
bool sandboxed_;
DISALLOW_IMPLICIT_CONSTRUCTORS(SetuidSandboxClient);
};
} // namespace sandbox
#endif // SANDBOX_LINUX_SUID_SETUID_SANDBOX_CLIENT_H_
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