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// Copyright 2014 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.
// This file is used to handle differences in Mach message IDs and structures
// that occur between different OS versions. The Mach messages that the sandbox
// is interested in are decoded using information derived from the open-source
// libraries, i.e. <>. While
// these messages definitions are open source, they are not considered part of
// the stable OS API, and so differences do exist between OS versions.
#include <mach/mach.h>
#include <stdint.h>
#include <memory>
#include <string>
#include "sandbox/mac/message_server.h"
namespace sandbox {
class OSCompatibility {
// Creates an OSCompatibility instance for the current OS X version.
static std::unique_ptr<OSCompatibility> CreateForPlatform();
virtual ~OSCompatibility();
// Gets the message and subsystem ID of an IPC message.
virtual uint64_t GetMessageSubsystem(const IPCMessage message) = 0;
virtual uint64_t GetMessageID(const IPCMessage message) = 0;
// Returns true if the message is a Launchd look up request.
virtual bool IsServiceLookUpRequest(const IPCMessage message) = 0;
// Returns true if the message is a Launchd vproc swap_integer request.
virtual bool IsVprocSwapInteger(const IPCMessage message) = 0;
// Returns true if the message is an XPC domain management message.
virtual bool IsXPCDomainManagement(const IPCMessage message) = 0;
// A function to take a look_up2 message and return the string service name
// that was requested via the message.
virtual std::string GetServiceLookupName(const IPCMessage message) = 0;
// A function to formulate a reply to a look_up2 message, given the reply
// message and the port to return as the service.
virtual void WriteServiceLookUpReply(IPCMessage reply,
mach_port_t service_port) = 0;
// A function to take a swap_integer message and return true if the message
// is only getting the value of a key, neither setting it directly, nor
// swapping two keys.
virtual bool IsSwapIntegerReadOnly(const IPCMessage message) = 0;
} // namespace sandbox